1#include <stdio.h> 2 3int func(int num); 4void print_int(int num); 5 6int main() { 7 int i; 8 9 for (i = 0; i < 10; i++) { 10 print_int(func(i)); 11 } 12 13 return 0; 14} 15 16int func(int num) { 17 return num * num; 18} 19 20void print_int(int num) { 21 printf("%d", num); 22} 23