What is constanats?

Constants are values that are fixed and cannot be changed during program execution. They are used in computer programming to create values that do not change throughout the course of the program. Constants can be either mathematical or logical in nature, and their values cannot be modified after they are defined.

Constants are usually defined at the beginning of a program and given a name so that they can be accessed throughout the entire program. They are often used to define important values such as pi, the speed of light, or the maximum number of users that can be logged into a system.

Constants can be defined in different ways depending on the programming language being used. In some languages, constants are defined using the ‘const’ keyword, while in other languages, they are defined using the ‘#define’ preprocessor directive.

Using constants in programming has several benefits, including improved readability, better code maintainability, and increased program reliability. By using constants instead of hard-coded values, it is easier to understand the purpose and meaning of the value, and changes can be made more easily if needed.