计算个体积什么的

#include <iostream>

#include <iomanip>

using namespace std;

#define p 3.1415926

int main()

{float r,h,y1,y2,q1,q2,v;

cout<<"请输入圆的半径和圆柱的高"<<endl;

cin>>r>>h;

y1=2*p*r;

y2=p*r*r;

q1=4*p*r*r;

q2=3.0/4.0*p*r*r*r;

v=y2*h;

cout<<setiosflags(ios::fixed)<<setiosflags(ios::right)<<setprecision(2);

cout<<setw(10)<<y1<<endl;

cout<<setw(10)<<y2<<endl;

cout<<setw(10)<<q1<<endl;

cout<<setw(10)<<q2<<endl;

cout<<setw(10)<<v<<endl;

return 0;

}