Tag: beginner
All the articles with the tag "beginner".
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How to Round to 2 Decimal Places in C++ (Display vs Value)
Round numbers to 2 decimal places in C++ using setprecision or std::round. Learn which one changes the value, which only changes output, and the float trap.
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How to Make a C++ Program Wait: sleep_for and Delays Explained
Pause a C++ program with std::this_thread::sleep_for. Learn the portable C++11 way, why Sleep and usleep are not portable, and why busy-wait loops are bad.
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Variable Scope in C++: Local, Global, and Block Scope Explained
Understand variable scope in C++ with examples. Learn local vs global variables, block scope, shadowing, and why global variables cause hard-to-find bugs.
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Virtual Destructor in C++: Why You Need One and When
Learn why C++ needs virtual destructors. See the memory leak that happens without one, the one-line fix, and the simple rule for when to add one to a class.