66) The minimum number of temporary variables needed to swap the contents of two variables is

67) If s and b are integers then purpose of the following program fragment is to
b = s + b ;
s = b - s ;
b = b - s ;

68) If integer needs two bytes of storage, then maximum value of an unsigned integer is

69) If integer needs two bytes of storage, then maximum value of a signed integer is

70) printf ( "%d" , printf ( "tim" ) ):