how to exit a child process - _exit() vs. exit

Question

Consider this code snippet:

pid_t cpid = fork();

if (cpid == -1) {
    perror(\"fork\");
    exit(EXIT_FAILURE);
}

if (cpid == 0) { // in child
    execvp(         


        

Answer 1

The child of fork() should always call _exit().

Calling exit() instead is a good way to cause pending stdio buffers to be flushed twice.