ex_staticfunc.cpp

来自「郑阿齐VC教材」· C++ 代码 · 共 36 行

#include <iostream.h>
class CSum
{
public:
	CSum(int a = 0, int b = 0) 
	{ 
		nSum += a+b; 
	}
	int GetSum() 
	{
		return nSum; 
	}
	void SetSum(int sum) 
	{ 
		nSum = sum; 
	}
	static void ShowData(CSum one); 	// 声明静态成员函数
private:
	static int nSum;	
};
void CSum::ShowData(CSum one) 		// 静态成员函数的实现
{
	cout<<"直接使用静态成员"<<endl;
	cout<<"sum = "<<nSum<<endl;
	cout<<"使用同类的对象"<<endl;
	cout<<"sum = "<<one.GetSum()<<endl;
}
int CSum::nSum = 0;		
void main()
{
	CSum one(10, 2);
	CSum::ShowData(one);
	one.SetSum(8);
	one.ShowData(one);
}