Practical C Programming

How to do it…

1. Define an array of size 2 and pass it as an argument to the pipe function.
2. Invoke the write function and write your chosen string into the pipe through the write end of the array. Repeat the procedure for the second message.
3. Invoke the read function to read the first message from the pipe. Invoke the read function again to read the second message.

The readwritepipe.c program for writing into the pipe and reading from it thereafter is as follows:

#include <stdio.h>#include <unistd.h>#include <stdlib.h>#define max 50int main(){    char str[max];    int pp[2];    if (pipe(pp) < 0)        exit(1);    printf("Enter first message to write into pipe: ");    gets(str);    write(pp[1], str, max);    printf("Enter second message to write into pipe: "); gets(str); ...