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#inCluDE <iostrEAm.h> ClAss gooDs { privAtE:...

输出结果为:85程序有些许小错误,改正后:#include<iostream.h> class goods{ private: static int totalWeight; int weight; public: goods(int w) { weight=w; totalWeight+=w; } goods(goods& gd) { weight=gd.weight; totalWeight+=weight ;} ~

你好!totalweight变量没有定义.如有疑问,请追问.

行return 1(即发中止程序的运行),所以肯定会出现错误.正确的代码当是这样的:#include <iostream>#include <cmath>using namespace std;int main(){ cout<<"please input a number:\n"; int m; cin>>m; double sqrtm=sqrt(

#include using namespace std; class complex {public: complex(double r=0.0,double i=0.0){real=r; imag=i;} complex complex_add(complex &c); void display(); private: double real; //

因为count为static变量,要有定义在class外的.cpp中加上:static int CGoods::count = 0;

<iostream>和<iostream.h>在接口和执行上都是不同的<iostream>的各组成都是以STL的形式声明的,然而<iostream.h>的各组成都是声明成全局型的. 你不能在一个程序中混淆使用这两个库.做为一种习惯,在新的代

输出结果: 25,39在类的内部是可以访问私有变量或者函数的!完整的程序是:#include<iostream>//不是iostream.husing namespace std;class base{ private: int x,y; public: void setxy(int a,int b){x=a;y=b;} void show(base *p) { cout<<p->x<<”,”<<p->y; }};int main(){ base a; a.setxy(25,39) a.show(&a); return 0;}

#include<iostream>using namespace std; class CDate { private: int year; int month; int day; public: void setdate(int y=0, int m=0, int d=0); void showdate(); };void CDate::setdate(int y, int m, int d) { year=y; month=m; day=d; } void CDate::

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