fork(1) download
copy 
  1. #include <stdio.h>
  2. #include <unistd.h>
  3.  
  4. int main() {
  5.     fork();                      // 1st fork
  6.     printf("A\n");
  7.  
  8.     if (fork() == 0) {           // 2nd fork (only child enters)
  9.         printf("B\n");
  10.         fork();                  // 3rd fork (grandchild)
  11.         printf("C\n");
  12.     } else {
  13.         printf("D\n");
  14.     }
  15.  
  16.     return 0;
  17. }
  18.  
Success #stdin #stdout 0.01s 5284KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
A
D
https://ideone.com/YKuclo
language:
C (gcc 8.3)
created:
23 days ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!