QUESTION 17 What will happen when the structure is declared? O it will not allocate any memory O it will allocate the memory O it will be declared and initialized O it will be declared QUESTION 18 When an argument is passed-by-value, changes in the called function affect the original variable s value; when an argum call-by-reference, changes in the called function affect the original variable s value. O Do, do. O Do not, do not. O Do not, do. O Do, do not. QUESTION 19 When are destructors called? O When a program ends O When a function ends O When a delete operator is used O All the mentioned QUESTION 20 Where do bugs occur in a program? There may be errors in the specification itself O Poor communication or a misunderstanding of users During the design and implementation phases. O All the Above