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KwickClips Cyber Safety and Ethics · 40 sec · free

Can a const change later?

Short answer. No. It gives a compile error.

What does runs + SIX print?

54.

Remember

Variable: value can change
const: value is fixed

Can you change a const value later? No. Runs is a variable, so it can change. Six is a const, so it is fixed. Changing it gives a compile error. This prints fifty four. A variable can change. A const stays fixed.

This clip is from the full lesson: C++ Tokens, Data Types, Variables and Operators — 8 minutes, with the tables, the quick answers and the whole lesson in text.

Useful for: NIOS Senior Secondary Computer Science (330), Programming All levels C++, Programming All levels C++, Programming All levels C++

More KwickClips from this lesson

Table: int 45 4 bytes, double 3.5 8 bytes, char A 1 byte, bool true 1 byte.Which type stores 3.5?41 secC++ code std::cout << 2 + 3 * 4; output 14.What is (2 + 3) * 4?43 secC++ code std::cout << (double) 7 / 2; output 3.5.What is implicit conversion?40 sec
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