1 diff --git a/main.c b/main.c
2 new file mode 100644
3 --- /dev/null
4 +++ b/main.c
5 @@ -0,0 +1,23 @@
6 +#include <stdio.h>
7 +
8 +int func(int num);
9 +void print_int(int num);
10 +
11 +int main() {
12 + int i;
13 +
14 + for (i = 0; i < 10; i++) {
15 + print_int(func(i));
16 + }
17 +
18 + return 0;
19 +}
20 +
21 +int func(int num) {
22 + return num * num;
23 +}
24 +
25 +void print_int(int num) {
26 + printf("%d", num);
27 +}
28 +