这个错误如何修改
这行出错：g=x+y;
显示错误如下：
[Error] 'x' was not declared in this scope
如何修改？代码如下：
程序代码：#include<iostream>
using namespace std;
int g;
double (*add)(double x,double y){
g=x+y;
return g;
}
double calculate(double x,double y,double *ar){
double *p=new double;
p=(*ar)(x,y);
return *p;
}
int main(void){
double j,k;
while(1){
cout<<"请输入j,k的值：";
while(!(cin>>j)||!(cin>>k)){
cin.clear();
while(cin.get()!='\n');
continue;
cout<<"错误，输入的是字母，请输入数字：\n";
}
(*add)(j,k);
double h=calculate(j,k,add);
cout<<"calculate函数的返回值为："<<h<<endl;
delete p;
}
return 0;
}[此贴子已经被作者于2020-12-10 19:30编辑过]
