error?错在？

来源：百度知道 编辑：UC知道 时间：2024/07/01 14:41:24
#include <iostream.h>
#define Pe 3.1415926
double v(double a,double b) // V=体积,A=半径,B=高
{
double c;
c=a*a*Pe/2;
return c;
}
int main()
{
double x,y,vv;
cout<<"输入半径:";
cin>>x;
cout<<"输入高:";
cin>>y;
vv=v(double a,double b);
cout<<"体积="<<vv;
return 0;
}

main里面 vv=v(double a,double b); 改成 vv=v(x,y);

#include "iostream.h"
#define Pe 3.1415926
double v(double a,double b) // V=体积,A=半径,B=高
{
double c;
c=a*a*Pe/2.0;
return c;
}
int main()
{
double x,y,V;
cout<<"输入半径:";
cin>>x;
cout<<"输入高:";
cin>>y;
V=v(x,y);
cout<<"体积="<<V;
getchar();
getchar();
return 0;
}

对的