How can I make class return value like function without brackets

Question

There is one thing I'm interested in, how to make something like get/set from c# in c++, there is way to do that, we can see it on class string, anyone know how?

Example:
class A{
int x;
public:
A(int x){
this->x=x;
}
char* a(){
return "I'm A";
}
}
int main(){
A a = 5; // call constructor A(int x)
cout<<a.a; // get char* from a()
}

Answer 1

C++ doesn't have getters and setters like JavaScript or C#.
You just have to call the methods as functions

Answer 2

And how does string work?
This code works and it's almost what I'm asking about
#include <string>
int main(){
string str = "text";
}

Answer 3

Ok, part of solution is using:
void operator=(int x){...}

however, this doesn't work on:
A a = 1;

only:
A a;
a = 1

Answer 4

I've got it, string is defined like this:
typedef char* string;