C - printf

This project is implementing a function '_printf' that produces output according to a given format, he is similar to the standart 'printf' function in C.

Description of '_printf' function

The '_printf' function is used to print an output to stdout, according to a format string that specifies how the argument are converted handling conversion specifiers.

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

Conversion specifiers we handle for this project : 
c : character
s : string
% : percent sign
d : decimal number 
i : integer

Compilation

gcc -Wall -Werror -Wextra -pedantic -std=gnu89 -Wno-format *.c

Requirements

Work environment : Ubuntu 20.04 using gcc
Coding style     : Betty
Header file      : main.h 
Allowed editors  : vi, vim, emacs

No more than 5 function per file.
Use of global variables are not allowed.
Header files should be include guarded.
All files should end with a new line.

Examples

• Character

    #include "main.h"
    #include <stdio.h>
  
    int main(void)
    {
        _printf("Character : [%c, %c]\n", 'c', 'C');
  
        return (0);
    }
  

Output :

./testchar
Character : [c, C]

• String

    #include "main.h"
    #include <stdio.h>
  
    int main(void)
    {
        _printf("String : [%s]\n", "Chong is the best SWE");
    
        return (0);
    }
  

Output :

./teststring
String : [Chong is the best SWE]

• %

    #include "main.h"
    #include <stdio.h>
  
    int main(void)
    {
        _printf("Percent : [%%]\n");
  
        return (0);
    }
  

Output :

./testpercent
Percent : [%]

• Decimal / Integer

    #include "main.h"
    #include <stdio.h>
  
    int main(void)
    {
        int len;
  
        len = _printf("please give us a good rating.                                                                      \n");
        _printf("Our rating : [%d/%i]\n", len, len);
  
         return (0);
    }
  

Output :

./testdec_int
please give us a good rating.
Our rating : [100/100]

Man page

The Man page of the function can be checked here.

Flowchart

Authors

• Lucas CHUONG DEBORT
• Eduardo RIBEIRO FERNANDES