Define Constant and Variable
Define constant and variable.
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A variable is a meaningful name which is given to a data storage location in the computer memory which contains a value. Each variable that is associated with the data type finds out what type of value can be stored in variable, for example:, a decimal such as 30.05, an integer, like 100 or a character, such as 'A'.
Variables can be declared by using the following syntax:
<Data_type> <variable_name> ;
A constant is same as the variable except that the value, which is assigned to the constant, cannot be changed, as in the case of a variable. Constants should be initialized at the time of declaration.
Constants can be declared by using the following syntax:
const int interestRate = 10;
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