Pipe system call

#include <stdio.h>
#include <unistd.h>

int main()
{
    int pipeFds[2], status, pId;
    char writeMsg[20] = "hello world";
    char readMsg[20];

    status = pipe(pipeFds);

    if (status == -1)
    {
        printf("Unable to create pipe\n");
        return 1;
    }

    pId = fork();

    // child process
    if (pId == 0)
    {
        read(pipeFds[0], readMsg, sizeof(readMsg));
        printf("\nChild Process receives data\n%s\n", readMsg);
    }
    // parent process
    else if (pId > 0)
    {
        printf("Parent Process sends data\n%s", writeMsg);
        write(pipeFds[1], writeMsg, sizeof(writeMsg));
    }

    return 0;
}

Source: raw.githubusercontent.com

Similar codes

17 votes134 views2 answers
Write in file in c
C
0 vote124 views1 answer
Main prototype
C
0 vote127 views1 answer
Powershell some fonts like #include are dissapearing
C
1 vote130 views1 answer
Using PostgreSQL array to store many-to-many relationship using sqlalchemy
C
0 vote212 views1 answer
Declare type c
C
0 vote131 views1 answer
Search array element in c
C
1 vote116 views2 answers
To find greatest of 4 numbers in c
C
5 votes127 views10 answers
Online python to c converter
C
0 vote164 views1 answer
Synopsis of fork()
C
0 vote140 views1 answer
Uri/Beecrowd problem no - 1149 solution in C
C