C++ inputs not working and program running the whole code (getline(cin, name2))

Question

I'm trying to learn C++ and was messing around with inputs, but I ran into some trouble. When creating more than one input, especially with integer inputs, the code would just execute everything, and I really can't tell why. Here's the code:

#include <iostream>


using namespace std;

int main()
{
    
    string name;
    cout << "Enter your name: " << endl;
    cin >> name;

    cout << "Hello " << name << endl;

    int age;
    cout << "Enter your age: ";
    cin >> age;

    cout << "You are " << age << " Years old" << endl;

    string name2;
    cout << "Enter your brothers name: " << endl;
    getline(cin, name2);

    cout << "Hello " << name2 << endl;


    return 0;
}