基于c语言求两个数最大公约数调用函数

#include<stdio.h>
int fun(int x, int y) {
    int i, t;
    if(x < y) {
        t = x;
        x = y;
        y = t;
    }
    while(y != 0) {
        i = x % y;
        x = y;
        y = i;
    }
    return x;
}
int main() {
    int a, b;
    scanf("%d%d", &a, &b);
    printf("%d\n", fun(a, b));
    return 0;
}