这是一个求素数的程序，并且同时存在编译错误和运行错误。编译错误是指程序编译过程中出现的一些语法错误，VC++的功能强大，能较为准确的定位，纠错较为方便，而运行错误是在运行过程中，比如该题中在边界值附近运行时的溢出错。-This is a prime number for the procedure, and exist simultaneously compile error and run error. Compiler compiler refers to the procedural error occurred in the course of a number of grammar errors, VC++ powerful, can be more accurate positioning, error correction is more convenient, and the error is running at running process, such as the boundary value problem in the vicinity of running mistake at the time of spill.