class Person {
    private name : string;
    private age : number;

    constructor(name: string, age: number){
        this.name = name;
        this.age =age;
    }

    tellMyName(): string {
        return "I am " + this.name;
    }
    tellMyAge(): string {
        return "I am " + this.age + " years old";
    }
}
const person1 = new Person("John", 40);
const person2 = new Person("Mary", 35);

console.log(person1.tellMyName());
console.log(person1.tellMyAge());
console.log(person2.tellMyName());
console.log(person2.tellMyAge());