Question

用C语言编写：输入半径R，求圆的周长、面积和球的体积？

Answer 1

#include<stdio.h>
#define PI 3.14

int main()
{
double R;
double cir,area,v; //周长，面积和球的体积

scanf("%lf",&R);

cir = 2*PI*R;
area = PI*R*R;
v = 4.0/3*PI*R*R*R;

printf("周长:%lf\n面积:%lf\n球的体积:%lf\n",cir,area,v);

return 0;
}