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

-1 vote197 views1 answer
Time now c
C
0 vote181 views6 answers
C++ to c converter online
C
0 vote198 views2 answers
Vowel and consonant C
C
0 vote203 views1 answer
Which library include size_t in C
C
0 vote194 views1 answer
Calculate the area of a circle and modify the same program to calculate the volume of a cylinder given its radius and height.
C
0 vote197 views1 answer
Meaning of &variable c
C
1 vote200 views1 answer
Comentar linhas vscode
C
8 votes220 views3 answers
Yarn install no optional
C
0 vote190 views1 answer
WARNING: QA Issue: rdepends on
C
0 vote189 views2 answers
Set all pins as input for loop
C