ft_printf

A custom implementation of the standard C printf function, developed as part of the 42 Network curriculum.
This project recreates formatted output handling, variadic arguments, and type conversions without relying on the original printf.

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✨ Features

• Handles mandatory conversion specifiers:
  • %c → character
  • %s → string
  • %d / %i → signed integer
  • %u → unsigned integer
  • %x / %X → hexadecimal (lowercase / uppercase)
  • %p → pointer address
  • %% → literal %
• Variadic argument handling with va_start, va_arg, and va_end
• Returns the number of characters printed (like the original printf)
• Norminette compliant and memory‑safe

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📂 Project Structure

. ├── ft_printf.c # Core implementation ├── ft_printf.h # Header file ├── ft_process_format.c# Format specifier handling ├── utils/ # Helper functions (string, number printing, etc.) └── Makefile # Build rules

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⚙️ Compilation

make

## 🚀 Usage

```C
#include "ft_printf.h"

int main(void)
{
    ft_printf("Hello %s! Number: %d, Hex: %x\n", "world", 42, 42);
    return 0;
}

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Compile and run:

gcc main.c libftprintf.a -o test
./test

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Output:

Hello world! Number: 42, Hex: 2a

🧪 Testing

Compare against the original printf:

ft_printf("FT: %d %d %d %%\n", 1, 2, 3);
printf("OG: %d %d %d %%\n", 1, 2, 3);

Expected output:

FT: 1 2 3 %
OG: 1 2 3 %