What are variables? Give an example.

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Q. What are variables? Give an example.

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Concept understanding — Variables, Identifiers and Data Types in C

A variable is a named location in memory whose value can change during execution. Before a variable is used it must be declared, which tells the compiler its name and the data type of the value it will hold.

The name given to a variable is an identifier. The rules for forming an identifier (or variable) name are: it may contain only letters, digits and the underscore _; it must begin with a letter or underscore (not a digit); it must not be a keyword; and it must contain no spaces or special symbols. Thus area, sum_1 and _count are valid, while 2x, net pay and int are invalid. …

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[!TLDR]

A variable is a named memory location whose value can change during execution.

A variable is an identifier that names a location in memory used to hold data. Unlike a constant, the value stored in a variable can be changed while the program runs. A variable must be declared with a data type before use, which fixes the kind and size of value it can store.

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Q.What are variables? Give an example.

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