---
title: "01 - Basic IO & Variables"
lastModified: "2026-10-07T11:38:29+05:30"
---

Scenario: Collect a user's name and age, then show an approximate birth year.

Concepts:
- Console input/output
- Parsing integers with validation
- Variables & arithmetic
- String interpolation

Exercises:
- Reject implausible ages (> 150)
- Ask for favourite color and output uppercase
- Extend to capture birth month & day

Theory Links:
- [Intro](/docs/en/modules/c-sharp/visual-programming-introduction)
- [Strings](/docs/en/modules/c-sharp/strings)