Parameters and Arguments
Learn about parameters and arguments in functions.
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Understanding parameters and arguments
Parameters and arguments are terms that are often used interchangeably to represent values that are provided for the function as an input. There’s a subtle difference though: the parameters of a function are set when the function is defined, whereas the arguments of a function are provided when it is called.
To see an example of a function that uses parameters, let’s create a function that squares numbers. In the example that follows, the square
function accepts a single parameter, n
, which is the number to be squared. In the body of the function, the name of the parameter acts just like a variable. We multiply this value by itself and return the result:
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