cpp / beginner
Snippet
Declaring Constants with const
The 'const' keyword creates a read-only variable. Once initialized, its value cannot be changed, which prevents accidental modifications.
snippet.cpp
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const double PI = 3.14159;// PI = 3.14; // This would cause a compiler error
Breakdown
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const double PI = 3.14159;
Declares a constant double-precision floating-point number named PI.
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// PI = 3.14;
Any attempt to reassign a value to a const variable results in an error.