C - printf

A simplified reimplementation of the printf function in C.

Features

This project is a reimplementation of the printf function in C. Our current implementation, _printf supports the following format specifiers:

_printf

• %c: Print a single character
• %s: Print a string
• %d: Print an integer
• %i: Print an integer
• %%: Print a literal percent sign

Requirements

To run this project, you will need:

• Ubuntu 20.x LTS
• GCC (GNU Compiler Collection)
• Git for cloning the repository and version management

Installation

1. Clone the repository

  git clone https://github.com/FrancesMP/holbertonschool-printf.git
  cd holbertonschool-printf

2. Create your own branch and push it

  git checkout -b branch_name
  git push --set-upstream origin branch_name

3. Compile

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

Testing _printf

To test the functionality of _printf and compare its output with the standard printf, after compiling you can run the following test program:

    ./file_name

The test program

#include <limits.h>
#include <stdio.h>
#include "main.h"

/**
 * main - Entry point
 *
 * Return: Always 0
 */
int main(void)
{
    int len;
    int len2;
    unsigned int ui;
    void *addr;

    len = _printf("Let's try to printf a simple sentence.\n");
    len2 = printf("Let's try to printf a simple sentence.\n");
    ui = (unsigned int)INT_MAX + 1024;
    addr = (void *)0x7ffe637541f0;
    _printf("Length:[%d, %i]\n", len, len);
    printf("Length:[%d, %i]\n", len2, len2);
    _printf("Negative:[%d]\n", -762534);
    printf("Negative:[%d]\n", -762534);
    _printf("Character:[%c]\n", 'H');
    printf("Character:[%c]\n", 'H');
    _printf("String:[%s]\n", "I am a string !");
    printf("String:[%s]\n", "I am a string !");
    len = _printf("Percent:[%%]\n");
    len2 = printf("Percent:[%%]\n");
    _printf("Len:[%d]\n", len);
    printf("Len:[%d]\n", len2);
    return (0);
}

Expected Output

Once running the program the output should be like this

Let's try to printf a simple sentence.
Let's try to printf a simple sentence.
Length:[39, 39]
Length:[39, 39]
Negative:[-762534]
Negative:[-762534]
Character:[H]
Character:[H]
String:[I am a string !]
String:[I am a string !]
Percent:[%]
Percent:[%]
Len:[12]
Len:[12] 

man _printf

A detailed manual page for _printf is available to provide comprehensive information on its usage, arguments, and return values.

man_3_printf

Flowchart

Authors

• Frances
• Sedra
• Rebecca

License

This project is licensed under the MIT License - see the LICENSE file for details.