45. requiring that one declare a function virtual If one wants run time polvoreh a. is due to backwards-compatibility with C b. is only true if the function is a template c. is an example of Stroustrup's "pay for it only if you use 1 " phliosephy d. all of the above 36. The reusen tyre and yahn for the sz oberator b. is the number of ctiaracters printed c. is a referenca to the ounpus stream to altowi for the chainding af scicias d. must, be a friend of the class being printed e. k is a vold function-1t does not return a value 37. Given Ceh, c. , the operator k= in ol +c a vold function-11 does not would ynically be a. a rnember function of c with one parameter b. a member function of c with wo parameters c. a non-member function with two parameters d. any of the above e. none of the above