c++求助

[楠辞琦咎]

该怎么修改呢，谢谢了


#include<iostream>
using namespace std;

class Lab3 {
public:
Lab3():num1(1){cout<<"这是构造函数"<<endl;}
~Lab3(){cout<<"这是析构函数"<<endl;}
void Getnum1(int N1){N1=num1;}
void Getnum2(int N2){N2=num2;}
void Setnum2(int N2){num2=N2;}
void Getnum3(){num3=num1 * 2;}
void Setnum3(int N3){num3=N3;}
private:
const int num1;
static int num2;
int num3;
};
int Lab3::num2=15;

void main(){
Lab3 t1;
t1.Setnum2(20);
t1.Setnum3(8);
cout<<"num1,num2,num3的值分别为"<<t1.Getnum1<<t1.Getnum2<<t1.Getnum3<<endl;
}




>c:\users\jiangcd\desktop\c++\c++\草稿.cpp(25) : error C3867: “Lab3::Getnum1”: 函数调用缺少参数列表；请使用“&Lab3::Getnum1”创建指向成员的指针
1>c:\users\jiangcd\desktop\c++\c++\草稿.cpp(25) : error C3867: “Lab3::Getnum2”: 函数调用缺少参数列表；请使用“&Lab3::Getnum2”创建指向成员的指针
1>c:\users\jiangcd\desktop\c++\c++\草稿.cpp(25) : error C3867: “Lab3::Getnum3”: 函数调用缺少参数列表；请使用“&Lab3::Getnum3”创建指向成员的指针

[paschen]

class Lab3 {
public:
	Lab3():num1(1){cout<<"这是构造函数"<<endl;}
	~Lab3(){cout<<"这是析构函数"<<endl;}
	void Getnum1(int N1){N1=num1;}
	void Getnum2(int N2){N2=num2;}
	void Setnum2(int N2){num2=N2;}
	void Getnum3(){num3=num1 * 2;}
	void Setnum3(int N3){num3=N3;}
public:
	const int num1;
	static int num2;
	int num3;
};
int Lab3::num2=15;

void main(){
	Lab3 t1; 
	t1.Setnum2(20);
	t1.Setnum3(8);
	cout<<"num1,num2,num3的值分别为"<<t1.num1<<t1.num2<<t1.num3<<endl;
}

[楠辞琦咎]

你把private 改成public来解决，改变原题了。。刚刚我发下了问题所在，应该加参数，t1.Getnum1（）<<t1.Getnum2（）<<t1.Getnum3（）<<endl; 还是谢谢你了

[纹枰老妖]

楼主，首先，您的Getnum1等成员函数声明成为了void类型，这种函数是不返回值的，这样的话cout怎么输出？其次，您的cout中，关于Getnum1等成员函数的调用忘记了参数列表，我帮您改了一下，如下：

#include<iostream>
using namespace std;

class Lab3 {
public:
	Lab3() :num1(1){ cout << "这是构造函数" << endl; }
	~Lab3(){ cout << "这是析构函数" << endl; }
	int Getnum1(int N1){ N1 = num1; return num1; }
	int Getnum2(int N2){ N2 = num2; return num2; }
	void Setnum2(int N2){ num2 = N2; }
	int Getnum3(){ num3 = num1 * 2; return num3; }
	void Setnum3(int N3){ num3 = N3; }
private:
	const int num1;
	static int num2;
	int num3;
};
int Lab3::num2 = 15;

void main(){
	Lab3 t1;
	t1.Setnum2(20);
	t1.Setnum3(8);
	cout << "num1,num2,num3的值分别为" << t1.Getnum1(5) << t1.Getnum2(99) << t1.Getnum3() << endl;
}

[楠辞琦咎]

谢谢二位，迟到的结贴哈哈