fork(1) download
copy 
  1. // CS22B1067 Skanda S Bhat
  2. #include<stdio.h>
  3. #include<stdlib.h>
  4. #include<unistd.h>
  5. #include<sys/wait.h>
  6.  
  7. int main()
  8. {
  9.     int pipe_fd[2];  
  10.     char buffer[100];
  11.  
  12.  
  13.     if (pipe(pipe_fd) == -1) {
  14.         perror("Pipe creation failed");
  15.         return 1;
  16.     }
  17.  
  18.     int pid = fork();  
  19.     if (pid < 0) {
  20.         perror("Fork failed");
  21.         return 1;
  22.     }
  23.  
  24.  
  25.     if (pid > 0) {
  26.         close(pipe_fd[0]); 
  27.  
  28.  
  29.         printf("Parent: Enter a message to send to the child: ");
  30.         fgets(buffer, sizeof(buffer), stdin);
  31.  
  32.  
  33.         write(pipe_fd[1], buffer, sizeof(buffer));
  34.         printf("Parent: Message sent to child.\n");
  35.  
  36.         close(pipe_fd[1]);  
  37.  
  38.         wait(NULL); 
  39.         printf("Parent: Child process finished.\n");
  40.     }
  41.  
  42.     else {
  43.         close(pipe_fd[1]);  
  44.  
  45.  
  46.         read(pipe_fd[0], buffer, sizeof(buffer));
  47.         printf("Child: Message received from parent: %s", buffer);
  48.  
  49.         close(pipe_fd[0]);
  50.         printf("Child: Exiting.\n");
  51.     }
  52.  
  53.     return 0;
  54. }
  55.  
  56.  
  57.  
Success #stdin #stdout 0s 5268KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
Child: Message received from parent: Child: Exiting.
Parent: Enter a message to send to the child: Parent: Message sent to child.
Parent: Child process finished.
https://ideone.com/FAwOvl
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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!