#include<stdio.h> #define PI 3.14 viod main() { float r; double L,S1,S2,V; printf("请输入所要求

#include<stdio.h> #define PI 3.14 viod main() { float r; double L,S1,S2,V; printf("请输入所要求的圆

#include
#define PI 3.14
void main()
{
float r;
double L,S1,S2,V;
printf("请输入所要求的圆的半径r\n");
scanf("%f",&r);
L=PI*2*r;
S1=PI*r*r;
S2=PI*4*r*r;
V=(4.0/3)*r*r*r*PI;
printf("圆的周长L=%0.2lf",L);
printf("\n圆的面积S1=%0.2lf",S1);
printf("\n该半径球的表面积S2=%0.2lf",S2);
printf("\n该半径球的体积V=%0.2lf",V);
}