Read / Write through a pipe in C

Question

I started today working with pipe() and fork() and exec() in C, and I now have a problem:

The main program, creates two pipes and forks. The child process does an ex

Answer 1

After read, you need to add terminating 0 byte at the end, before printing, something like

int len = read(select[0], buffer, sizeof(buffer) - 1);
if (len < 0) {
    perror("read error");
} else {
    buffer[len] = 0;
    printf("Buffer recived: %s\n", buffer);
}

So, imporant thing, read through man page of read, or actually man page of any function before you use it...

Alternatively, use some stdio.h function, which adds string terminating 0 themselves, probably fgets if reading line by line is ok.