Error in cin input to a class?

[jessica1234]

I am a newbie. I just want to write a class that accept input from cin command.

i don't know what to put (constructor or operator>> method???) in my Class A but I always run into compilation errors. Please enlighten me. Thank you

#include <iostream>

using namespace std;

class A
{
};

int main()
{
   A a;
   
   cout << "enter something: ";
   cin >> a;
}

Compile error:
g++ -Wall -c "test.cpp" (in directory: C:\Users\Terminal\Desktop\New folder)
test.cpp: In function 'int main()':
test.cpp:14:9: error: no match for 'operator>>' (operand types are 'std::istream {aka std::basic_istream<char>}' and 'A')
cin >> a;
^
In file included from c:\mingw\lib\gcc\mingw32\5.3.0\include\c++\iostream:40:0,

[ravenodin]

#include <iostream>
using namespace std;

class A {
    int data;
public:
    friend istream& operator>>(istream&, A&);
};

istream& operator>>(istream& in, A& a)
{
    in >> a.data;
    return in;
}

int main()
{
    cout << "enter a number: ";
	
    A a;
    cin >> a;
}

[Sajeel]

you only want to take an input through a class?

[Sajeel]

#include<iostream>
using namespace std;
class A
{
private:
char a[];
public:
A()
{
cout<<"Enter Something: ";
cin>>a;
}
};
int main()
{
A a;
}


it is a simple program to enter something through class