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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3. #include <unistd.h>
  4. int main(void)
  5. {
  6.  int childpid;
  7.  childpid = fork();
  8.  if (childpid == -1) {
  9.  printf("Can't fork.\n");
  10.  exit(1);
  11.  }
  12.  else if (childpid == 0) {
  13.  printf("\nChild: child pid = %d, parent pid = %d\n", getpid(), getppid());
  14.  exit(0);
  15.  }
  16.  else {
  17.  printf("\nParent: child pid = %d, parent pid = %d\n", childpid, getpid());
  18.  printf("Hai\n");
  19.  exit(0);
  20.  }
  21. }
  22.  
Success #stdin #stdout 0s 5324KB
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stdin
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Standard input is empty
stdout
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Parent: child pid = 2419594, parent pid = 2419576
Hai

Child: child pid = 2419594, parent pid = 1
https://ideone.com/HTvntQ
language:
C (clang 8.0)
created:
2 days ago
visibility:
public

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