#include <stdio.h> #include <stdlib.h> #include <conio.h> #include <string.h> // 3 char displayChoices() //menu selection screen function { char choice; system ("cls"); printf("MENU SELECTION SCREEN\n\n"); printf("1. Add string\n2. Remove string\n3. View string\n4. Search string\n5. Quit"); printf("\n\nEnter your choice: "); choice = getch(); }
//5
float massFlowRate (float p, float v, float A) //mass flow rate { float m; m = pvA; return m; }
float density (float m, float v, float A) //density { float p; p = m / (v*A); return p; }
float velocity (float m, float p, float A) //velocity { float v; v = m / (p*A); return v; }
float crossSectionalArea (float m, float p, float v) //cross-sectional area { float A; A = m / (p*v); return A; }
float netThrust (float W, float vj, float vo) //net thrust { float F; F = W*(vj-vo); return F; }
float massFlowRate2 (float F, float vj, float vo) //mass flow rate 2 { float W; W = F / (vj-vo); return W; }
float jetVelocity (float F, float W, float vo) //jet velocity { float vj; vj = F / W + vo; return vj; }
float flightVelocity (float F, float W, float vj) //flight velocity { float vo; vo = vj - (F / W); return vo; }
//6 double invel(double *Fdis, double *Idis, double *time,double *accel, double *vel ) { *vel = ((*Fdis-*Idis)/ *time)-((accel)(*time)/2);
}
double acc(double *Fdis, double *Idis, double *time,double *accel, double *vel ) { *accel = ((((*Fdis-*Idis)*2)/ ((time)(*time)))-((vel2)/(*time)));
}
double findis(double *Fdis, double *Idis, double *time,double *accel, double *vel ) { *Fdis = ((vel)(*time))+((accel)(time)(*time)/2)+*Idis;
} double indis(double *Fdis, double *Idis, double *time,double *accel, double *vel ) { *Idis = *Fdis-((vel)(*time))-((accel)(time)(*time)/2);
}
double tim(double *Fdis, double *Idis, double *time,double *accel, double *vel ) { time=2(*Fdis-*Idis)/((sqrt(((vel)(vel))+(2(accel)(*Fdis-*Idis))))+(*vel));
}
double press(double mole, double RA, double temp, double volume) { double pressure = moleRAtemp/volume; return pressure; }
double vol(double mole, double RA, double temp, double pressure) { double volume = moleRAtemp/pressure; return volume; }
double Rcon(double mole, double volume, double temp, double pressure) { double RA = pressurevolume/(moletemp); return RA; }
double temper(double RA, double volume, double mole, double pressure) { double temp = pressurevolume/(RAmole); return temp; }
double n(double RA, double volume, double temp, double pressure) { double mole = pressurevolume/(RAtemp); return mole; }
int main() { int choice; //1 & 5 int choice1, choice2, choice3; float m, p, v, A, F, W, vj, vo; //2 int order, constants[10], a, x, term, data, b, values[10]; int algorithm, add, mean, radicand, rows1; int columns1, rows2, columns2, matrixvalues1[3][3], c, d, matrixvalues2[3][3]; int operation, matrixvalues3[3][3], e, matrixvalues4[3][3], c1, d1, c2, d2; float sd; //3 char stringList[16][128], tempString[128]; int strcount=0, counter=0, counter1=0, found=0;
//4
int number = 7, numberList[4] = {1, 2, 3, 4}, address;
int *numberListPointer[4], *numberPointer;
//6
int eq, working, solver;
double Id,Fd, Iv, t, R, T, MW;
double grp1, grp2, grp3;
//7 int tempID, newID,numbers=0; char tempName[128], newName[128];
typedef struct //structure declaration { char name[128]; int id; } EMPLOYEE; EMPLOYEE employee[10];
do{ system("cls"); printf("Hello!\n"); printf("What topic do you want me to do?\n\n"); printf("1 - Nested Conditional and Iterative Statements\n"); printf("2 - Single Dimensional and Multidimensional Arrays\n"); printf("3 - Strings, String Arrays, and String Manipulation Functions\n"); printf("4 - Pointers\n"); printf("5 - Functions and Pass-by-Value\n"); printf("6 - Functions and Pass-by-Reference\n"); printf("7 - Structures, Structure Arrays, and Complex Data Types\n"); printf("8 - Exit Program\n\n"); scanf("%d", &choice);
switch(choice) {
case 1: system("cls"); printf("FORMULA SELECTION\n\n"); printf("1. Equation of Continuity\n2. Thrust Equation\n3. Exit\n\n"); scanf("%d", &choice1);
switch(choice1) { case 1: //***** { do { system ("cls"); printf("EQUATION OF CONTINUITY\n\n m = pvA\n\n"); printf("1. Mass Flow Rate (m)\n2. Density (p)\n3. Velocity (v)\n4. Cross-Sectional Area (A)\n5. Back\n\n"); printf("Enter variable to compute for: "); scanf("%d", &choice2);
switch(choice2)
{
case 1:
{
system ("cls");
printf("COMPUTING FOR MASS FLOW RATE");
printf("\n\nInput given density: ");
scanf("%f", &p);
printf("Input given velocity: ");
scanf ("%f", &v);
printf("Input given cross-sectional area: ");
scanf("%f", &A);
m = p*v*A;
printf("\n\nThe computed mass flow rate is: %.4f", m);
getch();
} break;
case 2:
{
system ("cls");
printf("COMPUTING FOR DENSITY");
printf("\n\nInput given mass flow rate: ");
scanf("%f", &m);
printf("Input given velocity: ");
scanf ("%f", &v);
printf("Input given cross-sectional area: ");
scanf("%f", &A);
p = m / (v*A);
printf("\n\nThe computed density is: %.4f", p);
getch();
} break;
case 3:
{
system ("cls");
printf("COMPUTING FOR VELOCITY");
printf("\n\nInput given mass flow rate: ");
scanf("%f", &m);
printf("Input given density: ");
scanf ("%f", &p);
printf("Input given cross-sectional area: ");
scanf("%f", &A);
v = m / (p*A);
printf("\n\nThe computed velocity is: %.4f", v);
getch();
} break;
case 4:
{
system ("cls");
printf("COMPUTING FOR CROSS-SECTIONAL AREA");
printf("\n\nInput given mass flow rate: ");
scanf("%f", &m);
printf("Input given density: ");
scanf ("%f", &p);
printf("Input given velocity: ");
scanf("%f", &v);
A = m / (p*v);
printf("\n\nThe computed cross-sectional area is: %.4f", A);
getch();
} break;
case 5:
return main();
break;
default:
printf("\n\nInvalid Command");
getch();
break;
}
} while (choice2<5);
return main();
} break;
case 2:
{
do
{
system ("cls");
printf("THRUST EQUATION\n\n F = W (vj - vo)\n\n");
printf("1. Net Thrust (F)\n2. Mass Flow Rate (W)\n3. Jet Velocity (vj)\n4. Flight Velocity (vo)\n5. Back\n\n");
printf("Enter variable to compute for: ");
scanf("%d", &choice3);
switch(choice3)
{
case 1:
{
system ("cls");
printf("COMPUTING FOR NET THRUST");
printf("\n\nInput given mass flow rate: ");
scanf("%f", &W);
printf("Input given jet velocity: ");
scanf ("%f", &vj);
printf("Input given flight velocity: ");
scanf("%f", &vo);
F = W*(vj-vo);
printf("\n\nThe computed net thrust is: %.4f", F);
getch();
} break;
case 2:
{
system ("cls");
printf("COMPUTING FOR MASS FLOW RATE");
printf("\n\nInput given net thrust: ");
scanf("%f", &F);
printf("Input given jet velocity: ");
scanf ("%f", &vj);
printf("Input given flight velocity: ");
scanf("%f", &vo);
W = F / (vj-vo);
printf("\n\nThe computed mass flow rate is: %.4f", W);
getch();
} break;
case 3:
{
system ("cls");
printf("COMPUTING FOR JET VELOCITY");
printf("\n\nInput given net thrust: ");
scanf("%f", &F);
printf("Input given mass flow rate: ");
scanf ("%f", &W);
printf("Input given flight velocity: ");
scanf("%f", &vo);
vj = F / W + vo;
printf("\n\nThe computed jet velocity is: %.4f", vj);
getch();
} break;
case 4:
{
system ("cls");
printf("COMPUTING FOR FLIGHT VELOCITY");
printf("\n\nInput given net thrust: ");
scanf("%f", &F);
printf("Input given mass flow rate: ");
scanf ("%f", &W);
printf("Input given jet velocity: ");
scanf("%f", &vj);
vo = vj - (F / W);
printf("\n\nThe computed flight velocity is: %.4f", vo);
getch();
} break;
case 5:
return main();
break;
default:
printf("\n\nInvalid Command");
getch();
break;
}
} while (choice3<5);
return main();
} break;
case 3:
break;
default:
printf("\n\nInvalid Command");
break;
}
break;
case 2: //***** system ("cls"); printf("MENU SELECTION SCREEN\n\n"); printf("1. Polynomial Evaluation\n2. Statistical Algorithm\n3. Matrix Operations\n4. Exit"); printf("\n\nEnter your choice: "); scanf("%d", &choice1);
switch(choice1) {
case 1:
{
do
{
system ("cls");
printf("POLYNOMIAL EVALUATION");
printf("\n\nEnter order of polynomial: "); //order
scanf("%d", &order);
if (order<10)
{
printf("\nEnter coefficients:\n"); //coefficients
for (a=0; a<=order; a++)
{
scanf("%d", &constants[a]);
}
printf("\nEnter value of x: "); //value of x
scanf("%d", &x);
for (a=0, term=0; a<=order, order>=0; a++, order--)
{
term = term + constants[a]*pow(x, order);
}
printf("\n\nThe answer is: %d", term);
printf("\n\nDo you want to try again?\n1. Yes\n2. No\n\n");
scanf("%d", &choice2);
}
}
while (choice2==1);
}break;
case 2:
{
system ("cls");
printf("STATISTICAL ALGORITHM");
printf("\n\nEnter number of data: "); //number of data
scanf("%d", &data);
if (data<10)
{
printf("\nEnter values of data:\n"); //data
for (b=0; b<data; b++)
{
scanf("%d", &values[b]);
}
do
{
system ("cls");
printf("Choose a statistical algorithm\n"); //operation
printf("1. Mean\n2. Standard Deviation\n3. Summation\n4. Back\n\n");
scanf("%d", &algorithm);
switch(algorithm)
{
case 1: //mean
{
system ("cls");
printf("MEAN");
for (b=0, add=0; b<data; b++)
{
add = add + values[b];
}
mean = add / data;
printf("\n\nThe mean is: %d", mean);
getch();
}break;
case 2: //standard deviation
{
system ("cls");
printf("STANDARD DEVIATION");
for (b=0, add=0; b<data; b++)
{
add = add + values[b];
}
mean = add / data;
for (b=0, radicand=0; b<data; b++)
{
radicand = radicand + pow((values[b]-mean), 2);
}
sd = sqrt(radicand);
printf("\n\nThe standard deviation is: %.4f", sd);
getch();
}break;
case 3: //summation
{
system ("cls");
printf("SUMMATION");
for (b=0, add=0; b<data; b++)
{
add = add + values[b];
}
printf("\n\nThe sum is: %d", add);
getch();
}break;
case 4:
{
}break;
default:
{
printf("\n\nInvalid Command");
getch();
}break;
}
} while (algorithm!=4);
}
else
{
printf("\n\nToo much data."); //error message
getch();
}
}break;
case 3: //matrix operation
{
do
{
system ("cls");
printf("MATRIX OPERATION");
printf("\n\n1. Make 1st matrix\n2. Make 2nd matrix\n3. Select matrix operation\n4. Back\n\n");
scanf("%d", &choice3);
switch(choice3)
{
case 1: //matrix1
{
system ("cls");
printf("MATRIX 1\n\n");
printf("Enter number of rows (M): ");
scanf("%d", &rows1);
printf("\nEnter number of columns (N): ");
scanf("%d", &columns1);
if ((rows1<=3) && (columns1<=3))
printf("\n\nEnter values for matrix 1: \n");
for (c=0; c<rows1; c++)
{
for (d=0; d<columns1; d++)
{
scanf("%d", &matrixvalues1[c][d]);
}
}
}break;
case 2: //matrix2
{
system ("cls");
printf("MATRIX 2\n\n");
printf("Enter number of rows (M): ");
scanf("%d", &rows2);
printf("\nEnter number of columns (N): ");
scanf("%d", &columns2);
if ((rows1<=3) && (columns1<=3))
printf("\n\nEnter values for matrix 2: \n");
for (c=0; c<rows2; c++)
{
for (d=0; d<columns2; d++)
{
scanf("%d", &matrixvalues2[c][d]);
}
}
}break;
case 3: //matrix operation
{
system ("cls");
printf("Choose matrix operation:\n\n");
printf("1. Addition\n2. Multiplication\n3. Transpose\n\n");
scanf("%d", &operation);
switch(operation)
{
case 1: //addition
{
if ((rows1==rows2) && (columns1==columns2))
{
system ("cls");
printf("Resulting Matrix: \n\n");
for (c=0; c<rows1; c++)
{
for (d=0; d<columns1; d++)
{
matrixvalues3[c][d] = matrixvalues1[c][d] + matrixvalues2[c][d];
printf("\t%d", matrixvalues3[c][d]);
}
printf("\n");
}
getch();
}
else
{
system ("cls");
printf("Matrices are not compatible. Please repeat.");
getch();
}
}break;
case 2: //multiplication
{
if (columns1==rows2)
{
system ("cls");
printf("Resulting Matrix: \n\n");
for (c=0; c<rows1; c++)
{
for (d=0; d<columns2; d++)
{
for (e=0, matrixvalues3[c][d]=0; e<rows2; e++)
{
matrixvalues3[c][d] = matrixvalues3[c][d]+matrixvalues1[c][e]*matrixvalues2[e][d];
}
printf("\t%d", matrixvalues3[c][d]);
}
printf("\n");
}
getch();
}
else
{
system ("cls");
printf("Matrices are not compatible. Please repeat.");
getch();
}
}break;
case 3: //transpose
{
system ("cls");
printf("Resulting Matrices: \n\n");
for (c1=0; c1<columns1; c1++)
{
for (d1=0; d1<rows1; d1++)
{
matrixvalues3[c1][d1] = matrixvalues1[d1][c1];
printf("\t%d", matrixvalues3[c1][d1]);
}
printf("\n");
}
printf("\n\n");
for (c2=0; c2<columns2; c2++)
{
for (d2=0; d2<rows2; d2++)
{
matrixvalues4[c2][d2] = matrixvalues2[d2][c2];
printf("\t%d", matrixvalues4[c2][d2]);
}
printf("\n");
}
getch();
}break;
}
}
}
} while (choice3!=4);
}break;
case 4:
{
}break;
default:
{
printf("\n\nInvalid Command");
getch();
}break;
}break; case 3: //***** { choice = displayChoices();
while (choice!='5')
{
switch(choice)
{
case '1': //add a string
{
system ("cls");
if (strcount<16)
{
printf("ENTER STRING");
printf("\n\nEnter a string:\n\n");
gets(stringList[strcount]);
strcount++;
}
else
{
printf("Maximum number of strings reached.");
getch();
}
} break;
case '2': //remove a string
{
system ("cls");
printf("REMOVE STRING");
printf("\n\nEnter string to remove:\n\n");
gets(tempString);
for (counter=0, found=0; counter<strcount && !found; counter++)
{
if (!strcmp(stringList[counter],tempString))
{
found=1;
for (; counter<strcount; counter++)
{
strcpy(stringList[counter], stringList[counter+1]);
}
strcount--;
}
}
if (found)
printf("\n\n%s deleted.", tempString);
else
printf("\n\n%s not found.", tempString);
getch();
} break;
case '3': //view all strings
{
system ("cls");
printf("VIEW STRING");
printf("\n\nYour string(s) is/are:\n\n");
for (counter=0; counter<strcount; counter++)
{
printf("%d) %s\n", counter+1, stringList[counter]);
}
getch();
} break;
case '4': //search for a string
{
system ("cls");
printf("SEARCH STRING");
printf("\n\nEnter string to search for:\n\n");
gets(tempString);
for (counter=0, found=0; counter<strcount && !found; counter++)
{
if (strcmp(stringList[counter], tempString)==0)
{
found=1;
}
}
if (found)
{
printf("\n\nString found.");
getch();
}
else
{
printf("\n\nString not found.");
getch();
}
} break;
default:
{
printf("\n\nInvalid Command.");
getch();
} break;
}
choice = displayChoices(); //back to menu selection screen
}
}
break;
case 4: //pointers
system ("cls");
printf("\tNUMBERS\n_________________________");
numberPointer = &number;
printf("\n\nAddress of variable: \n%d - %u", *numberPointer, numberPointer); //address of int variable displayed
printf("\n\nAddresses of the elements of the array: \n"); //addresses of array elements displayed
for (counter=0; counter<4; counter++)
{
numberListPointer[counter] = &numberList[counter];
printf("%d - %u\n", *numberListPointer[counter], numberListPointer[counter]);
}
do
{
printf("\n_________________________\n\nEnter an address: ");
scanf("%u", &address); //address received
int *addressPointer;
addressPointer = address; //adress copied to pointer
if (addressPointer==numberPointer) //check address match
{
printf("Enter an integer value: ");
scanf("%d", &x);
*numberPointer = x;
}
else
{
for (counter=0; counter<4; counter++)
{
if (addressPointer==numberListPointer[counter])
{
printf("Enter and integer value: ");
scanf("%d", &x);
*numberListPointer[counter] = x;
}
}
}
system ("cls"); //new data displayed
printf("\tNUMBERS\n_________________________");
numberPointer = &number;
printf("\n\nAddress of variable: \n%d - %u", *numberPointer, numberPointer);
printf("\n\nAddresses of the elements of the array: \n");
for (counter=0; counter<4; counter++)
{
numberListPointer[counter] = &numberList[counter];
printf("%d - %u\n", *numberListPointer[counter], numberListPointer[counter]);
}
printf("\n\nDo you want to repeat?\n1. Yes\n2. No\n"); //repetition
scanf("%d", &choice);
} while (choice==1);
if (choice!=2)
{
printf("\nInvalid Choice. Press any key to exit.");
}
else
printf("\nThank you.");
break;
case 5:
{
system ("cls");
printf("FORMULA SELECTION\n\n"); //formula selection screen printf("1. Equation of Continuity\n2. Thrust Equation\n3. Exit\n\n"); scanf("%d", &choice1);
switch(choice1) { case 1: //equation of continuity { do { system ("cls"); printf("EQUATION OF CONTINUITY\n\n m = pvA\n\n"); printf("1. Mass Flow Rate (m)\n2. Density (p)\n3. Velocity (v)\n4. Cross-Sectional Area (A)\n5. Back\n\n"); printf("Enter variable to compute for: "); scanf("%d", &choice2);
switch(choice2) //unknown variable
{
case 1:
{
system ("cls");
printf("COMPUTING FOR MASS FLOW RATE");
printf("\n\nInput given density: ");
scanf("%f", &p);
printf("Input given velocity: ");
scanf ("%f", &v);
printf("Input given cross-sectional area: ");
scanf("%f", &A);
printf("\n\nThe computed mass flow rate is: %.4f", massFlowRate(p, v, A));
getch();
} break;
case 2:
{
system ("cls");
printf("COMPUTING FOR DENSITY");
printf("\n\nInput given mass flow rate: ");
scanf("%f", &m);
printf("Input given velocity: ");
scanf ("%f", &v);
printf("Input given cross-sectional area: ");
scanf("%f", &A);
printf("\n\nThe computed density is: %.4f", density(m, v, A));
getch();
} break;
case 3:
{
system ("cls");
printf("COMPUTING FOR VELOCITY");
printf("\n\nInput given mass flow rate: ");
scanf("%f", &m);
printf("Input given density: ");
scanf ("%f", &p);
printf("Input given cross-sectional area: ");
scanf("%f", &A);
printf("\n\nThe computed velocity is: %.4f", velocity(m, p, A));
getch();
} break;
case 4:
{
system ("cls");
printf("COMPUTING FOR CROSS-SECTIONAL AREA");
printf("\n\nInput given mass flow rate: ");
scanf("%f", &m);
printf("Input given density: ");
scanf ("%f", &p);
printf("Input given velocity: ");
scanf("%f", &v);
printf("\n\nThe computed cross-sectional area is: %.4f", crossSectionalArea(m, p, v));
getch();
} break;
default:
break;
}
} while (choice2<5);
} break;
case 2: //thrust equation
{
do
{
system ("cls");
printf("THRUST EQUATION\n\n F = W (vj - vo)\n\n");
printf("1. Net Thrust (F)\n2. Mass Flow Rate (W)\n3. Jet Velocity (vj)\n4. Flight Velocity (vo)\n5. Back\n\n");
printf("Enter variable to compute for: ");
scanf("%d", &choice3);
switch(choice3) //unknown variable
{
case 1:
{
system ("cls");
printf("COMPUTING FOR NET THRUST");
printf("\n\nInput given mass flow rate: ");
scanf("%f", &W);
printf("Input given jet velocity: ");
scanf ("%f", &vj);
printf("Input given flight velocity: ");
scanf("%f", &vo);
printf("\n\nThe computed net thrust is: %.4f", netThrust(W, vj, vo));
getch();
} break;
case 2:
{
system ("cls");
printf("COMPUTING FOR MASS FLOW RATE");
printf("\n\nInput given net thrust: ");
scanf("%f", &F);
printf("Input given jet velocity: ");
scanf ("%f", &vj);
printf("Input given flight velocity: ");
scanf("%f", &vo);
printf("\n\nThe computed mass flow rate is: %.4f", massFlowRate2(F, vj, vo));
getch();
} break;
case 3:
{
system ("cls");
printf("COMPUTING FOR JET VELOCITY");
printf("\n\nInput given net thrust: ");
scanf("%f", &F);
printf("Input given mass flow rate: ");
scanf ("%f", &W);
printf("Input given flight velocity: ");
scanf("%f", &vo);
printf("\n\nThe computed jet velocity is: %.4f", jetVelocity(F, W, vo));
getch();
} break;
case 4:
{
system ("cls");
printf("COMPUTING FOR FLIGHT VELOCITY");
printf("\n\nInput given net thrust: ");
scanf("%f", &F);
printf("Input given mass flow rate: ");
scanf ("%f", &W);
printf("Input given jet velocity: ");
scanf("%f", &vj);
printf("\n\nThe computed flight velocity is: %.4f", flightVelocity(F, W, vj));
getch();
} break;
default:
break;
}
} while (choice3<5);
} break;
case 3: //exit option
break;
default:
break;
}
}
break;
case 6:
{
system ("cls");
do{
grp1=0;
grp2=0;
grp3=0;
printf( "This program is intended to solve \n engineering equations :");
printf("\n1-\tEquation for Velocity\n\n2-\tIdeal gas Equation");
printf("\n\nWhich of the equations do you want to choose?(1/2)\n");
scanf("%d",&eq);
//scans the equation to be used next
switch(eq)
{
case 1 :
printf(" Equation for Velocity \n");
printf(" The equation is :\n");
printf("\tIv=((Fd-Id)/t)-((a(t))/2)");
printf("where:\n1-\t Iv -\tInitial velocity in meters per second (m/s)");
printf("\n2-\t Fd -\tFinal distance (m) ");
printf("\n3-\t Id -\tInitial distance (m) ");
printf("\n4-\t a -\tacceleration in meters per second square(m/s^2) ");
printf("\n5-\t t -\ttime it took in seconds(s) ");
//introducing the equation to the user
printf("\nWhat is the missing variable?(1-5)\n");
scanf("%d",&working);
//selects on the working equation (depends on the missing variable)
switch(working)
{
case 1:
//this option is for the missing Initial velocity
printf("\nThe missing variable is the Initial Velocity ");
printf("\n\tIv=((Fd-Id)/t)-((a(t))/2)");
printf("\nWhat is the Initial distance(meter)?\n");
scanf("%lf",&Id);
printf("\nWhat is the Final distance(meters)?\n");
scanf("%lf",&Fd);
printf("\nWhat is the acceleration(meters per second square)?\n");
scanf("%lf",&a);
printf("\nHow long did it took(seconds)?\n");
scanf("%lf",&t);
//gaining the values
//checks if can be divided and time can not be negative but can be zero
if (t>0)
{
invel(&Fd, &Id, &t, &a, &Iv );
printf("\nThe Initial Velocity is %f m/s\n",Iv);
}
else if (t=0)
{
grp3=0;
printf("\nThe Initial velocity is %f m/s^2\n",grp3);
}
else
{
printf("\nError the value of time is incorrect\n");
}
;
break;
case 2:
//this option is for the missing Final distance
printf("\nThe missing variable is the Final distance ");
printf("\n\tFd=Id-(Iv*t)-((a(t^2))/2)");
printf("\nWhat is the Initial distance(meter)?\n");
scanf("%lf",&Id);
printf("\nWhat is the Initial Velocity(meters per second)?\n");
scanf("%lf",&Iv);
printf("\nWhat is the acceleration(meters per second square)?\n");
scanf("%lf",&a);
printf("\nHow long did it took(seconds)?\n");
scanf("%lf",&t);
//gaining the values
//time can not be negative
if (t>=0)
{
findis(&Fd, &Id, &t, &a, &Iv );
printf("\nThe Final distance is %f m\n",Fd);
}
else
{
printf("\nError the value of time is incorrect\n");
}
;
break;
case 3:
//this option is for the missing Initial distance
printf("\nThe missing variable is the Initial distance ");
printf("\n\tId=Fd-(Iv*t)-((a(t^2))/2)");
printf("\nWhat is the Final distance(meter)?\n");
scanf("%lf",&Fd);
printf("\nWhat is the Initial Velocity(meters per second)?\n");
scanf("%lf",&Iv);
printf("\nWhat is the acceleration(meters per second square)?\n");
scanf("%lf",&a);
printf("\nHow long did it took(seconds)?\n");
scanf("%lf",&t);
//gaining the values
grp1=(Iv*t);
grp2=(a*t*t);
//time can not be negative
if (t>=0)
{
indis(&Fd, &Id, &t, &a, &Iv );
printf("\nThe Initial distance is %f m\n",Id);
}
else
{
printf("\nError the value of time is incorrect\n");
}
;
break;
case 4:
//this option is for the missing acceleration
printf("\nThe missing variable is the acceleration ");
printf("\n\ta=2*(((Fd-Id)/(t^2))-(Iv/t))");
printf("\nWhat is the Final distance(meter)?\n");
scanf("%lf",&Fd);
printf("\nWhat is the Initial Velocity(meters per second)?\n");
scanf("%lf",&Iv);
printf("\nWhat is the Initial distance(meters)?\n");
scanf("%lf",&Id);
printf("\nHow long did it took(seconds)?\n");
scanf("%lf",&t);
//gaining the values
grp1=(Fd-Id);
grp2=(t*t);
//time can not be negative but may be zero if there is no movement
if (t>0)
{
acc(&Fd, &Id, &t, &a, &Iv );
printf("\nThe acceleration is %f m/s^2\n",a);
}
else if (t=0)
{
grp3=0;
printf("\nThe acceleration is %f m/s^2\n",grp3);
}
else
{
printf("\nError the value of time is incorrect\n");
}
;
break;
case 5:
//this option is for the missing Time
printf("\nThe missing variable is the time ");
printf("\n\tt= (2*(Fd-Id)/(Iv+(((Iv^2)+(2*a(Id-Fd)))^1/2))");
printf("\nWhat is the Initial distance(meter)?\n");
scanf("%lf",&Id);
printf("\nWhat is the Final distance(meters)?\n");
scanf("%lf",&Fd);
printf("\nWhat is the acceleration(meters per second square)?\n");
scanf("%lf",&a);
printf("\nWhat is the Initial Velocity(meters per second)?\n");
scanf("%lf",&Iv);
//gaining the values
//checks if can be divided, acceleration can be zero if there is no displacement
if (a>0 && grp1>0)
{
indis(&Fd, &Id, &t, &a, &Iv );
printf("\nIt took %f s\n",t);
}
else if (a=0)
{
grp1=(Fd-Id);
grp3=((grp1)/Iv);
printf("\nIt took %f s\n",grp3);
}
else if (a<0 && grp1<0)
{
indis(&Fd, &Id, &t, &a, &Iv );
printf("\nIt took %f s\n",grp3);
}
else
{
grp2=(Iv*Iv)+(2*a*grp1*-1);
grp3=2*grp1/((sqrt(grp2))+Iv);
printf("\nIt took %f s\n",grp3);
}
;
break;
default:
printf("Error! This is not one of the choices. The program will now close");
eq=0;
getch();
return 0;
//another error occured using switch
break;
// to end an error
}
break;
case 2 :
printf(" The Ideal Gas State Equation \n");
printf(" The equation is :\n");
printf("\tpv = nRT \n");
printf("where:\n1-\t p -\tpressure in Newton per meter square(N/(m^2) ");
printf("\n2-\t v -\tvolume in Meter cube(m^3) ");
printf("\n3-\t R -\tUniversal Gas Constant in \n\t\t joule per mole Kelvin(8.31441 J/(mol*K)) ");
printf("\n4-\t T -\tTemperature in Kelvin(K) ");
printf("\n5-\t n-\tnumber of moles(mol) ");
//introducing the equation to the user
printf("\nWhat is the missing variable?(1-5)\n");
scanf("%d",&working);
//selects on the working equation (depends on the missing variable)
switch(working)
{
case 1:
//pressure is missing
printf("\nThe missing variable is the pressure");
printf("\nWhat is the volume in Meter cube(m^3)?\n");
scanf("%lf",&v);
printf("\nWhat is the Universal Gas Constant(joule per mole Kelvin)?\n");
scanf("%lf",&R);
printf("\nWhat is the Temperature(Kelvin)?\n");
scanf("%lf",&T);
printf("\nWhat is the number of moles(mol)?\n");
scanf("%lf",&MW);
// if MW or v is zero it cannot be used as a dividend
if ((MW>0) && (v>0))
{
p= press(MW, R, T, v);
printf("The pressure is %f N/m^2", p);
}
else
{
printf("error the values cannot exist");
}
;
break;
case 2:
//volume is missing
printf("\nThe missing variable is the volume");
printf("\nWhat is the pressure(Newtons per meter square)?\n");
scanf("%lf",&p);
printf("\nWhat is the Universal Gas Constant(joule per mole Kelvin)?\n");
scanf("%lf",&R);
printf("\nWhat is the Temperature(Kelvin)?\n");
scanf("%lf",&T);
printf("\nWhat is the number of moles?\n");
scanf("%lf",&MW);
// if MW or p is zero it cannot be used as a dividend
if ((MW>0) && (p>0))
{
v=vol(MW, R, T, p);
printf("The velocity is %f m/s",v);
}
else
{
printf("error the values cannot exist");
}
;
break;
case 3:
//Universal Gas Constant is missing
printf("\nThe missing variable is the Universal Gas Constant");
printf("\nWhat is the volume(meters cube)?\n");
scanf("%lf",&v);
printf("\nWhat is the pressure(Newton per meter square)?\n");
scanf("%lf",&p);
printf("\nWhat is the Temperature(Kelvin)?\n");
scanf("%lf",&T);
printf("\nWhat is thenumber of moles?\n");
scanf("%lf",&MW);
grp1=T;
grp2=MW*v*p;
// if T is zero it cannot be used as a dividend but T can be zero or less than zero
if ((T>0) && (MW>0))
{
R= Rcon(MW, v, T, p);
printf("The Universal gas Constant is %f Joules per mole Kelvin",R);
}
else if ((T<0) && (MW>0))
//number of moles can not be negative
{
R= Rcon(MW, v, T, p);
printf("The Universal gas Constant is %f Joules per mole Kelvin",R);
}
else
{
printf("The value of Temperature is zero \nso the equation can not be used");
}
;
break;
case 4:
//Temperature is missing
printf("\nThe missing variable is the Temperature");
printf("\nWhat is the volume(meters cube)?\n");
scanf("%lf",&v);
printf("\nWhat is the pressure(Newton per meter square)?\n");
scanf("%lf",&p);
printf("\nWhat is the Universal Gas Constant(joule per mole Kelvin)?\n");
scanf("%lf",&R);
printf("\nWhat is the number of moles?\n");
scanf("%lf",&MW);
grp1=R*MW;
// if R is zero it cannot be used as a dividend
if ((grp1>0))
{
grp3=temper(R, v, MW, p);
printf("The Temperature is %f Kelvin",grp3);
}
else if (grp1<0)
{
grp3=temper(R, v, MW, p);
printf("The Temperature is %f Kelvin",grp3);
}
else
{
printf("error the values cannot exist");
}
;
break;
case 5:
//Molecular Weight is missing
printf("\nThe missing variable is the number of moles");
printf("\nWhat is the volume(meters cube)?\n");
scanf("%lf",&v);
printf("\nWhat is the pressure(Newton per meter square)?\n");
scanf("%lf",&p);
printf("\nWhat is the Universal Gas Constant(joule per mole Kelvin)?\n");
scanf("%lf",&R);
printf("\nWhat is the Temperature(Kelvin)?\n");
scanf("%lf",&T);
grp1=R*T;
// if R or T is zero it cannot be used as a dividend temp can be below zero
if ((grp1>0))
{
MW= n(R, v, T, p);
printf("The number of moles is %f mol",MW);
}
else if (grp1<0)
{
MW= n(R, v, T, p);
printf("The number of moles is %f mol",MW);
}
else
{
printf("error the values cannot exist");
}
;
break;
default:
printf("Error! This is not one of the choices. The program will now close");
eq=0;
getch();
return 0;
break;
//error in switch specifically char
// to end an error
}
;
break;
default:
printf("Error! This is not one of the choices. The program will now close");
working=0;
getch();
return 0;
break;
//error in switch specifically char
// can not break the char so close program
// to end an error
}
getch();
//to stop the loop for a while
printf("\n\nDo you still want to use the program?");
printf("\n1-Yes");
printf("\n2-No\n");
scanf("%d",&x);
//decision of the user to continue or not
system("cls");
//to clearscreen upon reuse
}while(x<2);
//does looping for reusing the program
system("pause");
}break;
case 7:
do{
system ("cls");
printf("MENU SELECTION SCREEN\n\n"); //menu selection screen
printf("1. Add Entry\n2. Display Entries\n3. Remove Entry\n4. Edit Entry\n5. Search Entry\n6. Exit\n\n");
scanf("%d", &choice);
switch(choice)
{
case 1: //add entry
{
system ("cls");
if (number<10)
{
printf("ADD ENTRY");
printf("\n\nEnter Name: ");
scanf("%s", &employee[numbers].name);
printf("Enter ID Number: ");
scanf("%d", &employee[numbers].id);
number++;
}
else
{
printf("Maximum number of entries reached.");
getch();
}
} break;
case 2: //view entries
{
system ("cls");
printf("VIEW ENTRIES");
printf("\n\n\tNAME\t\t\tID NUMBER\n\n");
printf("Joseph\t\t\t11404803\n\n");
for (counter=0; counter<numbers; counter++)
{
printf("\t%s\t\t\t%d\n", employee[counter].name, employee[counter].id);
printf("Joseph\t\t\t11404803\n\n");
}
getch();
} break;
case 3: //remove entry
{
system ("cls");
printf("REMOVE ENTRY");
printf("\n\n1. Remove via Name\n2. Remove via ID Number\n");
scanf("%d", &choice2);
switch(choice2)
{
case 1: //remove via name
{
printf("\nEnter name to remove: ");
scanf("%s", &tempName);
for (counter=0, found=0; counter<numbers && !found; counter++)
{
if (strcmp(employee[counter].name,tempName)==0)
{
found=1;
for (; counter<numbers; counter++)
{
strcpy(employee[counter].name, employee[counter+1].name);
employee[counter].id = employee[counter+1].id;
}
number--;
}
}
if (found)
printf("\nEmployee %s deleted.", tempName);
else
printf("\nEmployee %s deleted.", tempName);
getch();
} break;
case 2: //remove via id number
{
printf("\nEnter ID Number to remove: ");
scanf("%d", &tempID);
for (counter=0, found=0; counter<numbers && !found; counter++)
{
if (employee[counter].id == tempID)
{
found=1;
for (; counter<numbers; counter++)
{
strcpy(employee[counter].name, employee[counter+1].name);
employee[counter].id = employee[counter+1].id;
}
number--;
}
}
if (found)
printf("\nEmployee with ID Number %d deleted.", tempID);
else
printf("\nEmployee with ID Number %d not found.", tempID);
getch();
} break;
default:
{
printf("\nInvalid Command");
getch();
} break;
}
} break;
case 4: //edit entry
{
system ("cls");
printf("EDIT ENTRY");
printf("\n\n1. Edit Name\n2. Edit ID Number\n");
scanf("%d", &choice2);
switch(choice2)
{
case 1: //edit via name
{
printf("\nEnter name to edit: ");
scanf("%s", &tempName);
for (counter=0, found=0; counter<numbers && !found; counter++)
{
if (strcmp(employee[counter].name,tempName)==0)
{
found=1;
printf("Enter new name: ");
scanf("%s", &newName);
strcpy(employee[counter].name, newName);
}
}
if (found)
printf("\nEmployee %s is now %s.", tempName, newName);
else
printf("\nEmployee %s not found.", tempName);
getch();
} break;
case 2: //edit via id number
{
printf("\nEnter ID Number to edit: ");
scanf("%d", &tempID);
for (counter=0, found=0; counter<numbers && !found; counter++)
{
if (employee[counter].id == tempID)
{
found=1;
printf("Enter new ID Number: ");
scanf("%d", &newID);
employee[counter].id = newID;
}
}
if (found)
printf("\nID Number %d is now %d.", tempID, newID);
else
printf("\nID Number %d not found.", tempID);
getch();
} break;
default:
{
printf("\nInvalid Command");
getch();
} break;
}
} break;
case 5: //search entry
{
system ("cls");
printf("SEARCH ENTRY");
printf("\n\n1. Search via Name\n2. Search via ID Number\n");
scanf("%d", choice2);
switch(choice2)
{
case 1: //search name
{
printf("\nEnter name to search for: ");
scanf("%s", &tempName);
for (counter=0, found=0; counter<numbers && !found; counter++)
{
if (strcmp(employee[counter].name,tempName)==0)
{
found=1;
}
}
if (found)
printf("\nEmployee %s found.", tempName);
else
printf("\nEmployee %s not found.", tempName);
getch();
} break;
case 2: //search id number
{
printf("\nEnter ID Number to search for: ");
scanf("%d", &tempID);
for (counter=0, found=0; counter<numbers && !found; counter++)
{
if (employee[counter].id == tempID)
{
found=1;
}
}
if (found)
printf("\nID Number %d found.", tempID);
else
printf("\nID Number %d not found.", tempID);
getch();
} break;
default:
{
printf("\nInvalid Command");
getch();
} break;
}
} break;
}
}while(choice!=6);
break;
} }while (choice!=8);
system("PAUSE"); return 0; }
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