QUESTION 21 Which is the correct statement about operator overloading? O Only arithmetic operators can be overloaded Only non-arithmetic operators can be overloaded O Precedence of operators are changed after overloading O Associativity and precedence of operators does not change QUESTION 22 Which of the following is a properly defined structure? Ostruct {int a;} struct a_struct {int a;} Ostruct a_struct int a; Ostruct a struct {int a;}; QUESTION 23 Which of the following permits function overloading on C++? O Type O number of arguments type & number of arguments O number of objects QUESTION 24 Which of these is not one of the goals of quality software? It is reusable It works It can be modified with excessive time and effort It is completed on time and within budget