Question

1) Write note-
a) Constant and variables.​

Answer 1

Answer:

A constant is a data item whose value cannot change during the program's execution. Thus, as its name implies – the value is constant. A variable is a data item whose value can change during the program's execution. Thus, as its name implies – the value can vary.

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Answer 2

Ur Answer :-

Constant and variables»

A quantity which doesn't changes its value is known as constant whereas A quantity which changes its value is known as variables.

Ur Examples:-

Constant » no. of bananas in one dozen.

Variable » length of side of squares.