Project 1: Personal Greeter

Project 1: Personal Greeter

Your first C# console app: ask for a name and age, then greet the user.

The goal

Read a name and an age, then print a friendly message that tells them how old they'll be next year.

What you practice

• Console.WriteLine and Console.ReadLine
• Convert.ToInt32 casting
• String interpolation with
  quot;{x}"
• A little arithmetic

Starter code

using System;

Console.WriteLine("What is your name?");
string name = Console.ReadLine();

Console.WriteLine("How old are you?");
int age = Convert.ToInt32(Console.ReadLine());

int nextYear = age + 1;
Console.WriteLine(
quot;Hello {name}, next year you will be {nextYear}!");

Step-by-step

1. Run the starter and answer the questions.
2. Wrap the age conversion in a try...catch that handles a bad number.
3. Add a goodbye message at the end.
4. Re-run and test with both valid and invalid ages.

Checklist

• [ ] The name is read with ReadLine()
• [ ] The age is converted with Convert.ToInt32
• [ ] The message uses interpolation
• [ ] Next year's age is correct
• [ ] A try/catch handles bad input
• [ ] The program runs without errors

TL;DR

• ReadLine() always returns a string.
• Convert it before doing math.
• Interpolation makes messages clean.