Seriously, he said the next question was string manipulation or something:
#include <stdio.h>
char f[8] = {70, 117, 99, 107, 32, 121, 111, 117};
int main(){
int u; for(u=0; u<8; u++) { printf("%c", f[u]); }
printf(".\n");
}
Thank them for their time and walk out.
Or, if I was really annoyed: bust out some Common Lisp for the next problem, then leave.