This printf project is a collaboration between Samuel Adebayo and Gerald Juwah. Who are Software Engineers studing at students of ALX school. This project involves a function named "_printf" which would imitate the actual "printf" command located in the stdio.h library. This function contains some of the basic features and functions found in the man 3 of "printf".

What you would learn from this project:

• How to use git in a team setting
• Applying variadic functions to big projects
• The complexities of printf
• Managing a lot of flies and finding a good workflow

int _printf(const char *format, ...);

• Prints a string to the standard output, according to a given format
• All files were created and compiled on Ubuntu 14.04.4 LTS using GCC 4.8.4 with the command gcc -Wall -Werror -Wextra pedantic *.c
• Returns the number of characters in the output string on success, -1 otherwise
• Call it this way: _printf("format string", arguments...) where format string can contain conversion specifiers and flags, along with regular characters.

The format contains the string that is printed. As _printf() is variadic function, it can receives n arguments that replace by n tags written inside the string.

The format tags prototype is the following:

%[flags][length]specifier

If the program runs successfully, the return value is the amount of chars printed.

1. Printing the string of chars "Hello ALX School":

   • Input: \_printf("Hello %s.", "ALX School");
   • Output: Hello ALX School

2. Printing an integer number:

   • Input: \_printf("2 + 2 is equal to %d.", 4);
   • Output: 2 + 2 is equal to 4

3. Printing a binary:

   • Input: \_printf("98 in binary is [%b]", 98);
   • Output: 98 in binary is [1100010]

the function that imitates printf(), by printing data.

Header file where all Protypes are saved.

manpage file

Function that writes the Buffer Character.

/* Indetifier : %c */

Function that Prints an Integer.

/* Indetifier : %i or %d */

Function that Prints out a String.

/* Indetifier : %s */

Function that Prints a Binary.

/* Indetifier : %b */

Function that Prints a Percentage symbol.

/* Indetifier : %% */

Function that Prints Decimal in Octal.

/* Indetifier : %o */

Function that Prints Decimal in Hexadecimal.

/* Indetifier : %x */

Function that prints Decimal in Uppercase Hexadecimal.

/* Indetifier : %X */

Function that Prints an Unsigned Integer.

/* Indetifier : %u */

Function that Prints the Buffer

Documentation stating the styleguide on how the work flow was carried out.

Files to be ignored when pushing to github.

Function files used to run various tests on the _printf Function.

• Samuel Adebayo [email protected]
• Gerald Juwah [email protected]