QUESTION 1 A practical application of this function is to allow a user to enter a response af y' or Y to a prompt O tolower O toupper O ignorecase O tolower or toupper O None of these QUESTION 2 After the following statement executes, what value is stored in the vriable num? num-atoil 10001 O 1000 O 999 (1000 minus 1 for the null terminator) O "1000* O None of these QUESTION 3 In C++, a string is a sequence of characters stored in consecutive memary, terminated by a o period O space O null character O None of these QUESTION 4 Look at the following statemen. The expression being tested by this statement will evaluate to true if var is: O an alphabetic character O O O a symbol such as s or & both an alphabetic character and a symbol such as s or & None of these QUESTION 5 The statement charvarl-tolower will result in: o var1 storing the character value 'A o var1 storing the ASCIl value for lower case'a O A is output to the monitor O a is output to the monitor O None of these