This problem is:
1. 2004/6/29 or 04/06/4 that is, it is possible to be 4 in the year, it is possible to be 2. Month may be 2 bits or one, the days are likely to be 2, it is possible to be 1
For example, I will introduce you to strpara = 97/6/9 You have to return to 1997060, for example, I will introduce you to strpara = 02/03/9 You have to return 20020309
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In these two questions; the second question can be done in C language:
