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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3. #include <sys/types.h>
  4. #include <sys/wait.h>
  5. #include <unistd.h>
  6.  
  7.  
  8. int main(){
  9.  
  10.     printf("I 'am : %d\n", (int) getpid());
  11.  
  12.     pid_t pid = fork();
  13.     sleep(2);
  14.  
  15.     printf("for returend %d \n",(int) pid);
  16.  
  17.     if(pid < 0){ //erorr occurend.
  18.  
  19.         perror("fork failed");
  20.  
  21.     }else if(pid == 0){ //child process
  22.  
  23.         printf("I am the child with pid %d\n",(int) getpid());
  24.             printf("Child process is exiting \n");
  25.             exit(1);
  26.     }
  27.  
  28.     // parent
  29.     printf("I'am the parent waiting for the child process to end\n");
  30.     wait(NULL);
  31.     printf("Parent process is exiting\n");
  32.  
  33.     return 0;
  34.  
  35. }
Success #stdin #stdout 0.01s 5280KB
comments (?)
stdin
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Standard input is empty
stdout
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I 'am : 3054170
for returend 0 
I am the child with pid 3054173
Child process is exiting 
I 'am : 3054170
for returend 3054173 
I'am the parent waiting for the child process to end
Parent process is exiting
https://ideone.com/VBRCne
language:
C (gcc 8.3)
created:
10 hours ago
visibility:
public

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