about private and public in a class

Question

#include <iostream>
using namespace std;

class myClass {
public:
void setName(string name) {

}
string getName() {
return name;
}
private:
string name;
};

int main() {
myClass myObj;
myObj.setName("why");
cout << myObj.getName();
return 0;
}
/*why there is no output for the code above. What will happen if i set a function(setName) with no details and declare the private member "name"in its parameter.

Sorry for my poor ebglish*/

Answer 1

The definition of access specifiers is also available in the C++ tutorial.

Answer 2

Because the `setName` method is not changing the value of `name` member (a private variable). When you output the return value of `getName` method, it returned an empty string.

Add to `setName` method:
// modify value of private variable `name`
this->name = name;

Or you can also use constructor initializer, so that you can assign a name at object initialization.

Hth, cmiiw
(Edited)

Answer 3

Thx~

Answer 4

You're welcome