please help me, i can't understand each line of this program and it's meaning why we use it? . please explain it.

Question

#include <iostream>
using namespace std;

class myClass {
public:
myClass(string nm) {
setName(nm);
}
void setName(string x) {
name = x;
}
string getName() {
return name;
}
private:
string name;
};

int main() {
myClass ob1("David");
myClass ob2("Amy");
cout << ob1.getName();
}

Answer 1

You are defining a class myClass

3 public methods

a private name

Answer 2

into main you are defining 2 objects, ob1 and ob2

at the end you show Name of ob1 object

Answer 3

In this program, you define a constructor with the a parameter and call the setName function with pass a object.
second is, you make a setName function with a parameter and get the value of setName function using getName function.
third is, you call the function and constructor is call only defining a object of a class.