p4_7.cpp

相当丰富的C++源码

/******************************
*   p4_7.cpp                   *
* 函数的重载                   *
*******************************/
#include<iostream>
using namespace std;
/*int add(int x,int y,int z=0) 
{ 
	cout<<"(int, int,int=0)\t";
	return x+y; 
}*/
int add(int x,int y) 
{ 
	cout<<"(int, int)\t";
	return x+y; 
}
double add(double x,double y)
{ 
	cout<<"(double, double)\t";
	return x+y; 
}
int add(int x,double y)
{
	cout<<"(int, double)\t";
    return int(x+y); 
}
double add(double x,int y) 
{
	cout<<"(double,int)\t";
	return x+y; 
}
void main()
{ 
   cout<<add(9,8)<<endl;
   cout<<add(9.0,8.0)<<endl;
   cout<<add(9,8.0)<<endl;
   cout<<add(9.0,8)<<endl;
add('A','A'+'0');
add(float(8),float(9));
add(double(long double(8)),9);
}