Introduction - If you have any usage issues, please Google them yourself
Writing a program for middle school students and primary school students. Middle school students include input and output of the number, name, gender, number, English, math, Chinese, biology four door course grades and averaging pupils including number, name, gender, number, math and Chinese two classes of results of input and output, and calculate the average value.
Tip: design a person class, a middleStudent class, and an primaryStudent class.