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The printf project is a collaboration between Kingsley Emeka Umunna and Chibuzo Ashiegbu, actual students of Software Engineering at ALX Software Engineering Progromme , were a function named "_printf" imitates the actual "printf" command located in the stdio.h library. It contains some of the basic features and functions found in the manual 3 of "printf".

_printf() is a function that performs formatted output conversion and print data. Its prototype is the following:

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

Where 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 ":

   • Use: _printf("Hello ALX%s.", "ALX");
   • Output: Hello ALX .

2. Printing an integer number:

   • Use: _printf("10 + 10 is equal to %d.", 20);
   • Output: 10 + 10 is equal to 20.

3. Printing a binary, octal and hexadecimal:

   • Use: _printf("10 in binary is [%b], in octal is [%o] and in hexadecimal is [%x]", 5, 5, 5);
   • Output: 10 in binary is [1010], in octal is [12] and in hexadecimal is [A]

4. Printing a string codified in ROT13:

   • Use: _printf("Hello in ROT13 is %R", "Hello");
   • Output: Hello in ROT13 is Urybb

Using flags and length tags:

5. Printing the string of chars "Hello, ALX ":

   • Use: _printf("2 * 2 = %+d and 5 * -5 = %+i", 4, -25);
   • Output: 2 * 2 = +4 and 5 * -5 = -25

6. Printing a long integer number and short integer number:

   • Use: _printf("1 million as a long int is %ld, but as a short int is %hd", 1000000, 1000000);
   • Output: 1 million as a long int is 1000000, but as a short int is 16960