C# Fundamentals · Strings & Numbers · Lesson 8 of 22
Numeric Operations
Concept
Numeric Operations
C# supports the usual arithmetic operators, and dividing two ints performs integer division unless you cast one to a double.
By the end of this lesson
- Explain the core idea behind Numeric Operations.
- Predict output before running a change.
- Test one realistic and one unusual input.
- Use the result to make the next decision.
How to study this page
- 1. Read one concept.
- 2. Change the example.
- 3. Run, compare, and explain.
- 4. Complete the challenge below.
ExampleRunnable
int a = 7, b = 2;
double result = (double)a / b;
Console.WriteLine(result);Self-check before continuing
Without looking at the example, describe what changes when you modify one input in Numeric Operations. Then reopen the editor and prove your explanation with a small test.
You are ready to continue when you can predict, test, and explain the result.
Your turn
Cast an int to a double before dividing to get a precise decimal result.
Loading editor…
Console