All languages reserve certain words for their internal use. These words hold a special meaning within thecontext of the particular language, and are referred to as ‘keywords’. While naming variables we need toensure that we do not use one of these keywords as a variable name.For example, all the data types are reserved as keywords.Hence, naming a variable int will generate an error, but naming a variable integer will not.Some programming languages require the programmer to specify the name of the variable as well asthe type of data that is to be stored in it, before actually using a variable. This step is referred to as
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