主要是改主函数#include <iostream>
using namespace std;
void calc(double a);
void calc(double x,double y);
void calc(double i,double j,double k);
int main()
{
double a,b,c,i;
cout << "请问要输入多少个数字(1~3):" << endl;
cin >> i;
cout << "请输入这" << i << "个数:" << endl;
if( i == 1 )
{
cin >> a;
calc(a);
}
if( i == 2 )
{
cin >> a >> b;
calc(a,b);
}
if( i == 3 )
{
cin >> a >> b >> c;
calc(a,b,c);
}
return 0;
}
void calc(double a)
{
double aOut;
aOut = a*a;
cout<<a<<"的平方="<<aOut<<endl;
}
void calc(double x,double y)
{
double abOut;
abOut = x*y;
cout<<x<<"和"<<y<<"的积="<<abOut<<endl;
}
void calc(double i,double j,double k)
{
double abcOut;
abcOut = i+j+k;
cout<<i<<"和"<<j<<"及"<<k<<"的和="<<abcOut<<endl;
}
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