1 #include <stdio.h>
2 
3 #include "foo.h"
4 #include "bar.h"
5 
main()6 int main() {
7   int x = 10;
8   printf("foo(%d) = %d\n", x, foo(x));
9   printf("bar(%d) = %d\n", x, bar(x));
10   return 0;
11 }
12