你好，C语言，输入圆的半径，求出这个圆的面积和以这圆的直径为边长的正方形的面积的总面积

显示全部楼层 · 2011-12-23 13:39:52

double get_area(double radius){
const double pi = 3.1415;
double area;
area = (pi * radius * radius);
//圆
area += (radius * radius * 4.0);//圆+正方
//printf("area = %g\n",area);
return area;}...

千问 · 2011-12-23 13:39:52

#include int main(){float r,area;printf("输入圆的半径");scanf("%f",&r);area=3.141593*r*r+4*r*r;printf("%f",area);return 0;}...

千问 · 2011-12-23 13:39:52

#include #define PI 3.14159void main(){float r = 0;float sumarea = 0;printf("请输入圆的面积:");scanf("%f",&r);sumarea = (float)(PI*r*r + 4*r*r);printf("...

千问 · 2011-12-23 13:39:52

#include #include int main(void){float r,d,s1,s2,s;printf("please input r:");scanf("%f",&r);s1=3.14159*r*r;d=2*r;s2=d*d;s=s1...