Beginner Projects

Build these with nothing but what Level 1 covered — variables, arrays, functions, and basic pointers.

1. Command-Line Calculator

Read two numbers and an operator (+ - * /) with scanf, then print the result. Handle division by zero with a friendly message instead of letting the program crash.

2. Number Guessing Game

Seed rand() with srand(time(NULL)), generate a number between 1 and 100, then loop reading guesses and printing "Too high" / "Too low" until the player guesses correctly. Count and print the number of attempts.

3. Temperature Converter

Prompt for a temperature and a unit (C or F), convert it to the other unit, and print the result to two decimal places with printf's %.2f.

4. Fixed-Size To-Do List

Use a char array of fixed-length task strings (e.g. char tasks[10][50]) and an int count tracking how many are filled. Loop, presenting a menu (add / list / quit) until the user chooses to quit.

5. Simple Quiz App

Store 5 questions and their correct answers in parallel char arrays. Ask each question, compare the answer with strcmp, and print a final score out of 5.