练习13—几何求算

#include <stdio.h>
#include <math.h>
#define PI 3.14

float CirclePerimeter(float radius)
{
    return 2 * PI * radius;
}

float CircleArea(float radius)
{
    return PI * pow(radius, 2);
}

float SphereSurfaceArea(float radius)
{
    return 4 * PI * pow(radius, 2);
}

float SphereVolume(float radius)
{
    return 4 / 3 * PI * pow(radius, 3);
}

float CylinderVolume(float radius, float height)
{
    return PI * pow(radius, 2) * height;
}

int main()
{
    float r = 1.5, h = 3;
    printf("CirclePerimeter=%.2f\n", CirclePerimeter(r));
    printf("CircleArea=%.2f\n", CircleArea(r));
    printf("SphereSurfaceArea=%.2f\n", SphereSurfaceArea(r));
    printf("SphereVolume=%.2f\n", SphereVolume(r));
    printf("CylinderVolume=%.2f\n", CylinderVolume(r, h));
    return 0;
}