Question: 4 . Consider the function int sum ( int x = 1 , int y = 1 , int z = 1 ) ; is

4. Consider the function int sum ( int x =1, int y =1, int z =1) ; is called
by the expression sum (8,5).
How many default arguments is/are used? What is it or what are they?
What is a default argument in a function?

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