求此题源代码，非常感谢

可以先到csdn的每日一题刷一下题，再去考试

这有好多例子，找你最喜欢的：

Number of days between two dates C++ - Stack Overflow I saw examples for C#, Java, but for C++ i cant find solution to calculate how many days between two dates. For example between 2012-01-24 and 2013-01-08 Thanks! https://stackoverflow.com/questions/14218894/number-of-days-between-two-dates-c

https://www.tutorialspoint.com/find-number-of-days-between-two-given-dates-in-cplusplus