c++程序实现计算校验和参数，其中Checksum是程序名；inputfile是输入文件，其中包含数据字段封装的内容；outputfile为输出文件，该文件保存封装后的整数据报。-C++ program to implement calibration and parameter calculation, of which the Checksum is the program name　Inputfile is input file that contains the content of the data fields encapsulation　Outputfile for the output file, save the file after the encapsulation of the datagram