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#2
rjsp2017-03-02 08:32
 程序代码：#include <iostream> #include <iomanip> using namespace std; #ifndef M_PI #define M_PI 3.14159265358979323846 #endif int main( void ) { double r, h; if( !(cin>>r>>h) ) return 1; double circumference = 2*M_PI*r; double area_round = M_PI*r*r; double area_ball = 4*M_PI*r*r; double volume_cylinder = M_PI*r*r*h; cout << setiosflags(ios::fixed) << setprecision(2) << "圆周长 = " << circumference << '\n' << "圆面积 = " << area_round << '\n' << "圆球表面积 = " << area_ball << '\n' << "圆柱体积 = " << volume_cylinder << endl; return 0; } |
#define PI 3.14
#include<iostream.h>
#include<iomanip.h>
void main()
{ float r,h,zc,mj,bmj,tj;
cin>>r>>h;
zc=2*r*PI;
mj=r*r*PI;
bmj=4*PI*r*r*r;
tj=PI*r*r*r*h;
cout<<setiosflags(ios::fixed)<<setprecision(2);
cout<<圆周长<<zc<<endl;
cout<<圆面积<<mj<<endl;
cout<<圆球表面积<<bmj<<endl;
cout<<圆柱体积<<tj<<endl; 这一行显示有错误 C:\Users\DELL\Desktop\作业1.cpp(15) : error C2059: syntax error : '<<'
}
