A variable data type

A variable usually have a type that is associated with that variable. A variable type defines which operations can be performed with a variable. For example it is possible to do division with variables of numeric type, but this operation does not make sense for strings.

Many of programming languages have the following simple data types: a single character, a string, an integer, a floating point number, a Boolean.

I have listed simple data types, I hope that I will list more complex data types later.

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