printf Implementation README

Overview

This repository contains an implementation of the _printf function, which generates output based on a specified format. The function supports various format specifiers, such as %c for characters, %s for strings, %d for decimals, and %i for integers.

Function Signature

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

Execution Instructions

To execute the _printf function in your program, follow these steps:

1. Include the Header File: Include the header file "your_header_file.h" in your source file, where you intend to use the _printf function. #include "your_header_file.h"
2. Call the _printf Function: Use the _printf function in your code with the desired format specifier and arguments. Here's an example:

int main(void) {
    _printf("Displaying a straightforward sentence.\n");
    return 0;
}

3. Compile Your Code: Compile your source code, linking it with the implementation files. For example, if your source file is "main.c" and the implementation files are "print_char.c," "print_string.c," "print_decimal.c," and "your_header_file.h," you can compile using: gcc -o your_program main.c print_char.c print_string.c print_decimal.c
4. Run Your Executable: ./your_program

Usage

Basic Example

#include "your_header_file.h"

int main(void) {
    _printf("Displaying a straightforward sentence.\n");
    return 0;
}

Output: Displaying a straightforward sentence.

Format Specifiers

• %c: Represents a character.
• %s: Represents a string.
• %d: Represents a decimal.
• %i: Represents an integer.

Example:

#include "your_header_file.h"

int main(void) {
    _printf("%s", "This sentence is extracted from va_args!\n");
    return 0;
}

Output: This sentence is extracted from va_args!

Return Value

The function returns the count of characters printed, excluding the null byte used to terminate output to strings.

Error Handling

In the event of incorrect type usage, the function will return an error.

Implementation Details

The implementation includes the following source files:

• _putchar.c: Contains the implementation of the _putchar function.
• print_char.c: Contains the implementation of the function to print characters (%c).
• print_string.c: Contains the implementation of the function to print strings (%s).
• print_decimal.c: Contains the implementation of the functions to print decimals (%d and %i).

Bugs

No known bugs at the moment.

Authors

• Mahammadsaleh Abbas
• Zaman Kazimov