操作数无效如何解决 [英] Invalid operand how to solve

问题描述

#include <iostream>
#include<stdio.h>
using namespace std;
const int LEN=25;
class Employee
{
    char name[LEN];
    unsigned long enumb;
    public:
    void getdata()
    {
        cout<<"enter name";
        cin>>name;
        cout<<"empno";
        cin>>enumb;
    }
void putdata()
    {
        cout<<name;
        cout<<enumb;
        cout<<basic;
    }
    protected:
    float basic;
    void getbasic()
    {std::cout << "enter basic"<< std::endl;
    std::cin >> basic;
    }
};
class manager:public Employee
{
    private:
    char title[LEN];
    public:
    void getdata()
     {
         Employee :: getdata();
         getbasic();
         std::cout << "enter title" << std::endl;
         cin>>(title);
     }
     void putdata()
     {
         Employee:: putdata();
         std::cout << title<< std::endl;
     }
};
int main(void){
    system("cls");
    manager m1,m2;
    cout <<"manager 1"<< m1.getdata()
    std::cout << "manager 2"<< m2.getdata()std::endl;
    std::cout << "manager 1" << m1.putdata()
    std::cout << "manager 2"<<m2.putdata()std::endl;
    return 0
}

我尝试过：



#include< iostream>

#include< stdio.h>

using namespace std;

const int LEN = 25;

class Employee

{

char name [LEN];

unsigned long enumb;

public：

void getdata（）

{

cout<<输入名称;

cin>>名称;

cout<<empno;

cin>> ; enumb;

}

void putdata（）

{

cout<< name;

cout<< enumb;

=cout<< basic;

=}

= protected：

=float =basic;

=void =getbasic（）

={ std :: cout =<< =enter =basic<< =std :: endl;

=std :: cin = >>基本;

}

};

班级经理：公共员工

{
$ b $私人：

char title [LEN];

public：

void getdata（）

{

Employee :: getdata（）;

getbasic（）;

std :: cout<< 输入标题<< std :: endl;

cin>>（标题）;

}

void putdata（）

{

Employee :: putdata（）;

std :: cout<<标题<< std :: endl;

}

};

int main（void）{

system（cls ）;

经理m1，m2;

cout<<经理1<< m1.getdata（）

std :: cout<< 经理2<< m2.getdata（）std :: endl;

std :: cout<< manager 1<< m1.putdata（）

std :: cout<< manager 2<

What I have tried:

#include <iostream>
#include<stdio.h>
using namespace std;
const int LEN=25;
class Employee
{
char name[LEN];
unsigned long enumb;
public:
void getdata()
{
cout<<"enter name";
cin>>name;
cout<<"empno";
cin>>enumb;
}
void putdata()
{
cout<<name;
cout<<enumb;
="" cout<<basic;
="" }
="" protected:
="" float="" basic;
="" void="" getbasic()
="" {std::cout="" <<="" "enter="" basic"<<="" std::endl;
="" std::cin="">> basic;
}
};
class manager:public Employee
{
private:
char title[LEN];
public:
void getdata()
{
Employee :: getdata();
getbasic();
std::cout << "enter title" << std::endl;
cin>>(title);
}
void putdata()
{
Employee:: putdata();
std::cout << title<< std::endl;
}
};
int main(void){
system("cls");
manager m1,m2;
cout <<"manager 1"<< m1.getdata()
std::cout << "manager 2"<< m2.getdata()std::endl;
std::cout << "manager 1" << m1.putdata()
std::cout << "manager 2"<

推荐答案

main应该写成：

int main(void)
{
    system("cls");
    manager m1,m2;
    std::cout << "manager 1" << m1.getdata();
    std::cout << "manager 2" << m2.getdata() << std::endl;
    std::cout << "manager 1" << m1.putdata();
    std::cout << "manager 2" << m2.putdata() << std::endl;
    return 0;
}

在endls之前似乎缺少几个分号和几个重定向器。

It seemed to be missing several semicolons and a couple of redirectors before the endls.

两个 getdata 和 putdata 方法没有返回值，因此您无法将其（不存在的）结果传递给 std :: cout 插入运算符（<< ）。尝试：

Both getdata and putdata methods have no return value, so you cannot pass their (inexisting) result to std::cout insertion operator (<<). Try:

int main(void)
{
    manager m1,m2;
    std::cout << "manager 1:\n";
    m1.getdata();
    std::cout << "manager 2:\n";
    m2.getdata();
    std::cout << std::endl;
    std::cout << "manager 1:\n";
    m1.putdata();
    std::cout << "manager 2:\n";
    m2.putdata();
    std::cout << std::endl;
}

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