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说明：  输入年份，判断是该年的那一天， 实现判断输入的正误！(Enter the year, is to determine the day of the year)

给定日期，然后输入天数，计算输入天数之后的日期是多少(Given date, and then enter the number of days to calculate the number of days after the date of entry is the number)

一个可以在自己的电脑屏幕上生成烟花的小程序，可以烟花没有设计成圆的(One can generate fireworks on their computer screen applet, you can not designed to circle fireworks)

统计字母出现的频率，统计英文文章相应字母出现概率(Statistics the frequency of occurrence of English letters, the letters corresponding to probability statistics)

String类，分享一下。可以实现==, >, <, [], <<, Trim, Reverse, Find, upper, lower等功能(String脌脿 拢 卢 脰脧铆脪 禄脧脗 隆 拢 驴 脡脪脭脢渭脧脰 ==,)

说明：  主要用于节理裂隙岩体的非连续变形分析，也可以模拟爆破作用下的动力响应。(Mainly used for joints of the non-fractured rock mass deformation analysis, it can simulate the explosion of the dynamic response under.)

说明：  用于实现校际运动会管理的程序，主要功能就是实现校际运动会管理(Used to implement inter-school sports management program, the main function is to realize the inter-school sports management)

实现大整数的加减乘除法运算,C++编写.比较简单(Realize large integer addition and subtraction, multiplication and division operations, C++ Prepared. Relatively simple)

电影推荐系统，学校要求做的，vc，比较简单(Movie recommendation system, the school asked to do, vc, is relatively simple)

用C写的表达式计算器，不但可以完成四则运算，还可以处理一些函数运算，可以配合graphviz画出表达式树和计算过程。(Written using C expression calculator, not only can complete the four operations, but also can deal with a number of functions computing, you can tie in with graphviz to draw the expression tree and calculation process.)