Constants
- Constants are used to define values that remain fixed and cannot be changed during the execution of a program.
- In C++, they are typically declared using the const keyword. When you declare a constant, you specify its data type and give it a name.
- Constants are often used to make code more readable, and self-documenting, and to prevent accidental changes to important values.
- You can define constants of various data types, including integers, floating-point numbers, characters, and more.
- Constants are evaluated at compile-time, and their values are replaced directly in the code.
In the below code, maxCount, pi, and newline are constants, and their values cannot be modified after declaration.
const int maxCount = 100;
const double pi = 3.14159;
const char newline = '\n';
Difference Between Constant and Literals
In this article, we are going to discuss the differences between Constant and Literals in a programming language with examples.