C++ Data Types: Sizes, Ranges & Signed vs Unsigned (Beginner)
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This's lesson No.13 of Beginner Track – Course 2: Programming Concepts using C++ (part 1)
In this lesson, you’ll understand C++ data types by learning their sizes (bytes) and their value ranges.
We cover:
Fundamental data types overview (integral, floating, bool, char, etc.)
Signed vs unsigned (when to use each)
How to check type size in bytes using the sizeof keyword
How to print min/max ranges
Code + examples included so you can verify everything on your own compiler.
▶ Next: Homework choose the correct data type for real variables (age, monthly-salary, yearly-salary, etc.) from the previous lessons.
▶ Full programming roadmap (start here): • How to Start Programming in 2026 (Beginner...
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