用c语言调用函数求一个圆柱体的表面积和体积

以下是使用C语言调用函数求一个圆柱体的表面积和体积的示例代码：

#include <stdio.h>
#define Pi 3.1415926

void fun(int h, int r) {
    float area, volume;
    area = 2 * Pi * r * r + 2 * Pi * r;
    volume = Pi * r * r * h;
    printf("The surface area of this cylinder is %f, the volume is %f.", area, volume);
}

int main(void) {
    int h, r;
    printf("Please enter the height and radius of the cylinder:");
    scanf("%d%d", &h, &r);
    fun(h, r);
    return 0;
}