编程实现从键盘任意输入20个整数，统计非负数个数，并计算非负数之和。
Programming any input the keyboard 20 integer, non-negative number of statistics and calculate the sum of non-negative. (2016-04-12, WORD, 2KB, 下载3次)
windows api编程深入浅出，初学者适合看看怎么利用API函数来实现一般的功能！
windows api programming easy, beginner suitable to take a look at how to use the API functions to achieve the general features! (2013-01-19, WORD, 215KB, 下载8次)