DEV Community

Yaroslav Polyakov
Yaroslav Polyakov

Posted on • Edited on

1

Every C program has main()? (False)

actually, _start is real magic word.

nomain.c:

#include <stdio.h>

extern void _exit(register int);

int _start(){
    printf("Hello world!\n");
    _exit(0);
}
Enter fullscreen mode Exit fullscreen mode
$ gcc -o nomain nomain.c -nostartfiles
$ ./nomain 
Hello world!
Enter fullscreen mode Exit fullscreen mode

Top comments (0)

A Workflow Copilot. Tailored to You.

Pieces.app image

Our desktop app, with its intelligent copilot, streamlines coding by generating snippets, extracting code from screenshots, and accelerating problem-solving.

Read the docs

👋 Kindness is contagious

Dive into an ocean of knowledge with this thought-provoking post, revered deeply within the supportive DEV Community. Developers of all levels are welcome to join and enhance our collective intelligence.

Saying a simple "thank you" can brighten someone's day. Share your gratitude in the comments below!

On DEV, sharing ideas eases our path and fortifies our community connections. Found this helpful? Sending a quick thanks to the author can be profoundly valued.

Okay