(cache)[Wandbox]三へ( へ՞ਊ ՞)へﾊｯﾊｯ

Load template

Warnings

Optimization

Verbose

Compiler options:

Runtime options:

🐕 Corporate Sponsors:

🐶 Personal Sponsors:

About sponsors(Japanese)

created by

anonymous

1 minute ago

​x
 
#include <sys/types.h>
​
 #include<stdio.h>
 #include<unistd.h>
 #include<string.h>
​
 int main() {
     int fd[2] , ret = 0;
     char buffer[] = "Marvellous InfoSystems";
     char readBuff[BUFSIZ] = "01234567890123456789012345678901234567890";
     pid_t Childpid;
​
     pipe(fd);                                           //create a oneway communication channel i.e pipe i.e unnamed pipe
​
     Childpid = fork();
​
     if(Childpid == 0)                                   //child process
     {
         close(fd[0]);                                   /*close the ipnut side of the pipe after entering the child process*/
         printf("Child intiaites communication by writing the data at output side of the pipe \n");
         write(fd[1] , buffer , sizeof(buffer));         /*Child process writes at the output side of the pipe*/
     }
     else                                                //parent process
     {
         close(fd[1]);                                   /*Close output side of the pipe after the entering the parent proces*/
         ret = read(fd[0] , readBuff , sizeof(readBuff));/*Parent proces reads the data i.e written by the child at output side of the
 pipe*/
         printf("The data read by Parent process is : %s \n",readBuff);
     }
​
     return 0;
}
​

Editor settings:

Smart Indent

$ gcc prog.c -Wall -Wextra -std=c99

Stdin

Run (or Ctrl+Enter)

#permlink

Code

Start

prog.c: In function 'main':
prog.c:8:18: warning: variable 'ret' set but not used [-Wunused-but-set-variable]
    8 |      int fd[2] , ret = 0;
      |                  ^~~

Child intiaites communication by writing the data at output side of the pipe 
The data read by Parent process is : Marvellous InfoSystems

Finish

No Wrap