1, the date of the preparation of class MyDate, defined date. Should have several constructors, methods changeDate defined modification date (), defined showdate () output date. (20 points)
2, a write Celsius and Fahrenheit conversion classes, wherein the method of converting class methods. (20 points)
3, the preparation of a complex type, comprising entities and attributes imaginary part, as well as complex numbers, and a plurality of subtraction modulo, to output a complex character string "a + bI" (Design of Experiments) (30 minutes)
4 students write a class that includes basic information, and three student course grades, should calculate the highest score, lowest score and grade point average and methods (30 points)
