2.2. VariablesΒΆ

One of the most powerful features of a programming language is the ability to manipulate variables. A variable is a name that refers to a value.

An assignment statement creates new variables and gives them values:

This example makes three assignments and then prints the value of each of the variables. The first assigns a string to a new variable named message; the second assigns the integer 17 to a variable named n; and the third assigns the (approximate) value of pi to a variable named pi.

The type of a variable is the type of the value it refers to.

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