/C/Two way communication between child and parent processes in C using pipes

Two way communication between child and parent processes in C using pipes

#include <stdio.h>
#include<stdlib.h>
#include 
#include<unistd.h>
int main()
{
    pid_t pid;
    int r;
    char *ch=NULL;
    char *ch1=NULL;
    int readpipe[2];
    int writepipe[2];
    int a;
    int b;
    a=pipe(readpipe);
    b=pipe(writepipe);
      // check a and b

    pid=fork();
    // check pid

    if(pid==0)
    { //CHILD PROCESS
            close(readpipe[1]);
            close(writepipe[1]);
            read(readpipe[0],ch,sizeof(ch));
            printf("\nREAD = %s",ch);
            close(readpipe[0]);
            ch1="YES";
            write(writepipe[1],ch1,sizeof(ch1));
            close(writepipe[1]);
    }
    else
    { //PARENT PROCESS
            close(writepipe[0]);
            close(writepipe[1]);
            ch="HI!! YOU THERE";
            write(readpipe[1],ch,sizeof(ch));
            close(readpipe[1]);
            read(writepipe[1],ch1,sizeof(ch1));
            printf("\nACK RECEIVED %s",ch1);
            close(writepipe[1]);
    }
    return 0;
}

Source: codeproject.com

Similar codes

1 vote400 views1 answer
Como programar a area de um triangulo em c
C
0 vote394 views1 answer
C unused variable
C
0 vote391 views1 answer
Obby übersetzung
C
4 votes387 views3 answers
C ? operator
C
0 vote407 views2 answers
Lcm of two numbers
C
0 vote431 views1 answer
C sort odd even program
C
1 vote385 views1 answer
Bootstrap 5 modal not working vue js 3
C
1 vote382 views1 answer
Docker: Error response from daemon: could not select device driver "" with capabilities: [[gpu]].
C
0 vote379 views1 answer
KeyError: "['Adult Mortality' 'infant deaths' 'Alcohol' 'percentage expenditure'] not found in axis" site:stackoverflow.com
C
32 votes563 views6 answers
Material ui icons
C