Can someone tell me if this pseudocode for a case statement makes sense? ^^;

target num ← 3 case target num of
1: score ← score + 20
2: score ← score + 10
3: score ← score + 30
output score
end case

im trying to set 3 different targets and change the score by those values for each target that a ball collides with just wanted to know if i did something wrong or im using this case statement the wrong way ^^;

1)consider the following code snippet: #ifndef book_h#define book_hconst double max_cost = 1000.0; class book{public: book(); book(double new_cost); void set_cost(double new_cost); double get_cost() const; private: double cost; }; double calculate_terms(book bk); #endifwhich of the following is correct? a)the header file is correct as given.b)the definition of max_cost should be removed since header files should not contain constants.c)the definition of book should be removed since header files should not contain class definitions.d)the body of the calculate_terms function should be added to the header file.