fork download 
  1. #include <stdio.h>  
  2. #include <unistd.h>  
  3. #include <stdlib.h>  
  4. #include <sys/wait.h>  
  5. main()  
  6. { 
  7. 	int pid ;  
  8. 	printf("I'am the original process with PID %d and PPID %d.\n",  getpid(), getppid()) ;  
  9. 	pid = fork ( ) ; /* Duplicate. Child and parent continue from here */  
  10. 	if ( pid != 0 ) /* pid is non-zero,so I must be the parent*/  { 
  11. 		printf("I'am the parent with PID %d and PPID %d.\n",  getpid(), getppid()) ;  
  12. 		printf("My child's PID is %d\n", pid ) ;  
  13. 	} else /* pid is zero, so I must be the child */  { 
  14. 		printf("\nI'm the child with PID %d and PPID %d before sleeping.\n",  getpid(), getppid()) ; 
  15. 		sleep(4); /* make sure that the parent terminates first */  
  16. 		printf("\nI'm the child with PID %d and PPID %d after waking up.\n",  getpid(), getppid()) ;  
  17. 	} 
  18. 	printf ("PID %d terminates.\n", getpid()) ; 
  19. 	return 0; 
  20. }
Success #stdin #stdout 0s 3096KB
comments (?)
stdin 
Standard input is empty
stdout 
I'am the original process with PID 27117 and PPID 27115.
I'am the parent with PID 27117 and PPID 27115.
My child's PID is 27121
PID 27117 terminates.
https://ideone.com/3Gshdf
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
secret

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!