VARIABLE AND CONSTANT

Variable: -

    Those quantities which can hold any values are called as variable. The concept of variable is necessary in any programming language to store any inputted data in memory because the memory space is always allocated by variable names.

Constant: -

    Those quantity whose meaning is fixed is called as constant.

There are 3 kinds of constant

      1.     Numeric constant: -

      2.     Character constant: -

      3.     String constant: -

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