Practice Integer in CS Thinking

Use these practice problems to test your method after reviewing the concept explanation and worked examples.

Quick Recap

A data type that represents whole numbers (positive, negative, or zero) without decimal points.

Integers are counting numbers in code — things you can count without fractions: age, score, quantity, index.

Example 1

easy
What is the result of integer division 17 \div 5 and 17 \mod 5? Explain the difference from regular division.

Example 2

medium
A program stores a student's age as an integer. Why would an integer be more appropriate than a floating-point number for age in years?

Example 3

easy
What are the results of: (a) 25 MOD 7, (b) 100 DIV 3, (c) 8 MOD 2?

Example 4

medium
A vending machine program stores the price as 175 (meaning $1.75 in cents). A customer inserts 200 cents. Using only integer arithmetic (DIV for integer division, MOD for remainder), calculate the change in dollars and remaining cents.
← Back to Integer Worked Examples