Write the definition of a function oneless, which receives an int parameter and returns an int that is one less than the value of the parameter. so if the parameter's value is 7, the function returns the value 6. if the parameter's value happens to be 44, the functions returns the value 43.

The function can be written in python language as follows:

Explanation:

def oneLess(x:int):

     return x-1

The function is defined with keyword "def ",Then the name of the function is passed ( in this example oneLess)After the name, the parameter and the type of the parameter is defined between the parantheses.(here the parameter is x of type int)Finally the function returns one less then the value passed with the "return x-1" command.

Its all  useless we should stop doing everything digitally

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