1.

Briefly explain default arguments Default arguments.

Answer»

A default value can be set for a parameter (argument) of a function. When the user does not give a value the function will take the default value. An important thing remember, is an argument cannot have a default value unless all arguments on its right side must have default value. 

Functions with valid default arguments are given below

  • float area(int x, int y, int z = 30); 
  • float area(int x, int y = 20, int z = 30); 
  • float area(int x = 10, int y = 20, int z = 30);

Functions with invalid default arguments are given below 

  • float area(int x = 10, int y, int z); 
  • float area(int x, int y = 20, int z); 
  • float area(int x = 10, int y = 20, int z);


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