0x00題目
設圓半徑r=1.5,圓柱高h=3,求圓周長、圓面積、圓球體積、圓球面積、圓柱體積
用cin輸入數據,取小數點後兩位數字.
0x01代碼
#include<iostream>
#include<cmath>
#include<iomanip>
using namespace std;
int main(){
cout<<"輸入圓半徑與圓柱高,空格隔開"<<endl;
double r,h;
cin >> r >> h;
void caculate(double r,double h);
caculate(r,h);
system("pause");
}
/**
* 計算圓周長、圓面積、圓球表面積、圓球體積、圓柱體積
* */
void caculate(double r,double h){
const double PI = atan(1.)*4.; //定義圓周率
double yuanD = PI*2*r;
double yuanS = PI*r*r;
double ballS = 4*PI*r*r;
double balla = 4,ballb = 3;
double ballV = ((balla/ballb))*PI*r*r*r;
double zhuV = PI*r*r*h;
cout << "圓周長:" << setprecision(3) << yuanD << endl;
cout << "圓面積:" << setprecision(3) << yuanS << endl;
cout << "圓球表面積:" << setprecision(4) << ballS << endl;
cout << "圓球體積:" << setprecision(4) << ballV << endl;
cout << "圓柱體積:" << setprecision(4) << zhuV << endl;
}