Question

如何在c++运行时输入一次数据以后不会出现press any key to continue还可以继续输入数据

#include<iostream>
using namespace std;

double zy(double x,double a1,double a2,double a3,double a4,double a5)
{double y;

y=(a1+(a2+(a3+(a4+a5* x)*x)*x)*x);//四项式表达式
return y;
}
double zy(double x ,double a1 ,double=0 ,double=0 ,double=0 ,double=0 );
void main()
{double x;

cout<<"请输入x:";
cin>>x;
cout<<"zy(x,9)="<<zy(x,1)<<endl;
cout<<"zy(x,9,8)="<<zy(x,1,2)<<endl;
cout<<"zy(x,9,8,7)="<<zy(x,1,2,3)<<endl;
cout<<"zy(x,9,8,7,6)="<<zy(x,1,2,3,4)<<endl;
cout<<"zy(x,9,8,7,6,5)="<<zy(x,1,2,3,4,5)<<endl;

}

Answer 1

while(true)
{
cout<<"请输入x:";
cin>>x;
cout<<"zy(x,9)="<<zy(x,1)<<endl;
cout<<"zy(x,9,8)="<<zy(x,1,2)<<endl;
cout<<"zy(x,9,8,7)="<<zy(x,1,2,3)<<endl;
cout<<"zy(x,9,8,7,6)="<<zy(x,1,2,3,4)<<endl;
cout<<"zy(x,9,8,7,6,5)="<<zy(x,1,2,3,4,5)<<endl;
}

追问

这不是死循环么。。。

Answer 2

使用循环即可。

追问

怎么加，你加上去试试 我不会加 加上去就进入死循环不出数据

追答

加了循环后加一个判断，设置在某种条件下可以跳出循环。比如说这样：

#include<iostream>
using namespace std;

double zy(double x,double a1,double a2,double a3,double a4,double a5)
{
    double y;
    y=(a1+(a2+(a3+(a4+a5* x)*x)*x)*x);//四项式表达式
    return y;
}

double zy(double x ,double a1 ,double=0 ,double=0 ,double=0 ,double=0 );

int main()
{
    double x;
    while (true)
    {
        cout<<"请输入x:";
        cin>>x;
if (x==0)
{
break;
}
        cout<<"zy(x,9)="<<zy(x,1)<<endl;
        cout<<"zy(x,9,8)="<<zy(x,1,2)<<endl;
        cout<<"zy(x,9,8,7)="<<zy(x,1,2,3)<<endl;
        cout<<"zy(x,9,8,7,6)="<<zy(x,1,2,3,4)<<endl;
        cout<<"zy(x,9,8,7,6,5)="<<zy(x,1,2,3,4,5)<<endl;
    }
return 0;
}