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  1. #include <stdio.h>
  2. #include <unistd.h>
  3.  
  4. int main() {
  5.     int pid1, pid2, pid3, pid4, pid5, pid6;
  6.  
  7.     pid1 = fork();
  8.  
  9.     if (pid1 == 0) {
  10.         pid2 = fork();
  11.         printf("A \n");
  12.     } else {
  13.         char *execArgs[] = { "echo", "Process replaced!", NULL };
  14.         execvp("echo", execArgs);
  15.     }
  16.  
  17.     printf("B \n");
  18.  
  19.     pid3 = fork();
  20.  
  21.     if (pid4 != 0) {
  22.         printf("C \n");
  23.         char *execArgs[] = { "echo", "Process replaced!", NULL };
  24.         execvp("echo", execArgs);
  25.     } else {
  26.         if (pid1 != 0) {
  27.             pid5 = fork();
  28.             char *execArgs[] = { "echo", "Process replaced!", NULL };
  29.             execvp("echo", execArgs);
  30.             printf("D \n");
  31.         }
  32.     }
  33.  
  34.     if (pid2 > 0) {
  35.         pid6 = fork();
  36.         printf("E \n");
  37.     } else {
  38.         printf("F \n");
  39.         char *execArgs[] = { "echo", "Process replaced!", NULL };
  40.         execvp("echo", execArgs);
  41.     }
  42.  
  43.     printf("G \n");
  44.  
  45.     return 0;
  46. }
  47.  
Success #stdin #stdout 0s 5288KB
comments (?)
stdin
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Standard input is empty
stdout
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A 
B 
E 
G 
A 
B 
E 
G 
A 
B 
E 
G 
A 
B 
E 
G 
Process replaced!
Process replaced!
Process replaced!
https://ideone.com/ujY35O
language:
C (gcc 8.3)
created:
10 days ago
visibility:
public

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