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scvalex/fork.c

Created May 11, 2013 01:39
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A useful test for people who claim to know C: What does this program print? The answer requires a basic understanding of `stdio` and the semantics of forking. The answer is in the comments.
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fork.c
#include <stdio.h>
#include <unistd.h>
int main(int argc, char *argv[]) {
printf("Hello, ");
fork();
printf(" World!\n");
return 0;
}
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scvalex commented May 11, 2013

Build and run:

% gcc -Wall -o fork fork.c && ./fork 
Hello,  World!
Hello,  World!

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