#include <stdio.h>
#include "main.h"
int add(int x, int y)
{
return x + y;
}
int sub(int x, int y)
{
return x - y;
}
int main(void)
{
int sum = 0;
int n = 10;
for (int i = 0; i < n; i++) {
sum = add(sum, i);
}
printf("sum=%d\n", sum);
if ((sum % 10) == 0) {
printf("sum is multiple of 10\n");
}
if (sum == mul(5, 11)) {
printf("sum is 5 * 11\n");
}
}