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sy9_7
- 有5个学生,每个学生有3门课的成绩,从键盘输入以上数据(包括学生号,姓名,三门课成绩),计算出平均成绩-There are five students, each student has three classes of results, more than from the keyboard input data (including student number, name, class 3 results), calculate the average scores