本压缩包包含两个.C文件，一个可判断区间内素数，另一个可统计区间内素数个数，当然读者可将两个程序合并起来一起使用。-The archive contains two. C files, one can determine the range of prime numbers, and another may count the number of prime numbers within the range, of course, the reader can be used with two