Sieve 是一个基于对话框的程序，使用了著名的Eratosthenes素数算法来计算2和所指定的数之间存在的素数的数量。是一个多线程应用程序。-Sieve is a dialog-based procedures, the use of the famous Eratosthenes algorithm to calculate the prime numbers 2 and designated by the number that existed between the number of