/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

0 vote142 views1 answer
How to take comma separated integer input in c
C
0 vote131 views1 answer
How to make a check bigger
C
0 vote139 views1 answer
Block a website on mac
C
0 vote138 views1 answer
Arma 3 get group size
C
0 vote132 views1 answer
Magic Square matrix
C
0 vote148 views1 answer
Youbook
C
0 vote148 views1 answer
What does packing mean in c
C
0 vote148 views1 answer
11 1 C:\Users\user\Desktop\Cprogramms\2boocle.cpp [Error] expected primary-expression before '}' token
C
1 vote142 views4 answers
V
C
0 vote140 views1 answer
C memcpy array
C