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  1. #include <stdio.h>
  2. #include <unistd.h>
  3. #include <stdlib.h>
  4. #include <sys/wait.h>
  5.  
  6. int main()
  7. {
  8.     int pid, choice;
  9.     char cmd[20];
  10.  
  11.     pid = fork();   // Create child process
  12.  
  13.     if (pid < 0)
  14.     {
  15.         printf("Process creation unsuccessful\n");
  16.         exit(1);
  17.     }
  18.  
  19.     if (pid == 0)   // Child process
  20.     {
  21.         printf("\nChild process\n");
  22.  
  23.         do
  24.         {
  25.             printf("Enter the command: ");
  26.             scanf("%s", cmd);
  27.  
  28.             system(cmd);   // Execute command
  29.  
  30.             printf("Enter 1 to continue or 0 to exit: ");
  31.             scanf("%d", &choice);
  32.  
  33.         } while (choice == 1);
  34.  
  35.         exit(0);
  36.     }
  37.     else   // Parent process
  38.     {
  39.         wait(NULL);   // Parent waits for child
  40.         printf("\nChild process completed.\n");
  41.     }
  42.  
  43.     return 0;
  44. }
  45.  
Success #stdin #stdout 0.01s 5288KB
comments (?)
stdin
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Standard input is empty
stdout
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Child process
Enter the command: Enter 1 to continue or 0 to exit: 
Child process completed.
https://ideone.com/Oo5kTm
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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