Does child process execute both prints?

Question

What would be the output? I'm confused, it's 2 or 3 but which one I'm not sure. Can you help?

main() 
{
    printf("hello\n");

    if(fork() == 0)
        printf("hello\n");
}

What did you find? What happens when you pipe the output through `cat`, or redirect it to a file? — Jonathan Leffler, May 22 '17 at 00:29
Why will people cut and paste the code into a SO question but not into their editor of choice and compile the &*^%$ thing to get a solid answer! — John3136, May 22 '17 at 00:38
@John3136: Then he could simply paste it into` GCC` instead of `SO` and get the result. — Xaqron, May 22 '17 at 00:59

score 2 · Answer 1 · answered May 22 '17 at 00:44

if statement is gonna be evaluated after forking so each process would run it with it's own return value which is zero for child process and non-zero (PID) for parent so there would be 1 hello at this point.

Plus the first hello at the top of your code you get total of 2 hellos at terminal.

Does child process execute both prints?

1 Answers1