fork download 
  1. #include <stdio.h>
  2. #include <sys/types.h>
  3. #include <unistd.h>
  4.  
  5. int main()
  6. {
  7. pid_t pid1,pid11,pid111, pid2,pid21,pid22;
  8. pid1=fork();
  9. if(pid1=-1){
  10. printf("error");
  11.  
  12. }else if(pid1==0){
  13.         printf("child 1.0 my ppid:%d and my pid: %d",getppid(),getpid());
  14.   pid11=fork();
  15.   if(pid11==0){
  16.           printf("child 1.1 my ppid:%d and my pid: %d",getppid(),getpid());
  17.  
  18.     pid111=fork();
  19.     if(pid111==0){
  20.       printf("child 1.1.1 my ppid:%d and my pid: %d",getppid(),getpid());
  21.     }
  22.   }
  23.  
  24. }else{
  25.   pid2=fork();
  26.   if(pid2==0){
  27.           printf("child 2.0 my ppid:%d and my pid: %d",getppid(),getpid());
  28.     pid21=fork();
  29.     if(pid21==0){
  30.             printf("child 2.1 my ppid:%d and my pid: %d",getppid(),getpid());
  31.     }else{
  32.       pid22=fork();
  33.       if(pid22==0){
  34.               printf("child 2.2 my ppid:%d and my pid: %d",getppid(),getpid());
  35.       }
  36.     }
  37.   }
  38. }
  39. }
Success #stdin #stdout 0s 5292KB
comments (?)
stdin 
Standard input is empty
stdout 
errorerror
https://ideone.com/vKsVEM
language:
C (gcc 8.3)
created:
18 days ago
visibility:
public

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