定义一个结构体变量（包括年、月、日），编程序，要求输入年月日,计算并输出该日在本年中第几天。注意本题一定要定义结构体输入三个整数(并且三个整数是合理的,既比如当输入月份的时候应该在1至12之间，不应该超过这个范围)

变量，否则本输出一个整数.既输入的日期是本月的第几天。实验成绩无效。

-Define a structure variables (including year, month, day), a program, and asked to enter years day, calculate and output the day the first few days of this year. Note that the definition of the problem structure must enter three integers (and three integers are reasonable, such as when the input only when the month should be between 1 to 12, should not exceed this range) variable, or the output of an integer. Both Enter the date of the first few days of the month. Experimental results invalid.