求解一下下C++题，感激不尽
问题描述：
答
#include<bits/stdc++.h>
using namespace std;
void display(double d)
{
cout<<"A double:"<<d<<endl;
}
void display(int i)
{
cout<<"An int:"<<i<<endl;
}
void display(char c)
{
cout<<"A char:"<<c<<endl;
}
int main()
{
int a=5;
double b=0.123456;
char c='h';
short d=6;
display(b);
display(a);
display(c);
display(d);
return 0;
}
/*输出
A double:0.123456
An int:5
A char:h
An int:6
*/