读取并输出学生4次考试成绩两次测试期中期末平均成绩和最终成绩。 -Read and output the two test scores of students four times the average closing mid-term test results and the final results.

转换DSP机中间层到另一家的兼容驱动方便不同程序调用-Conversion DSP machine mid-tier to another compatible driver to facilitate a different procedure call