▍1. 7
说明: 题目7:输入四个十进制数(0-50)。 要求: (1)十进制输出偶数的个数。 (2)统计偶数的和 和 奇数和,并以从大到小的顺序输出这两个数。 (3)用十进制显示第二大的数。 (Title 7: Enter the four decimal number (0-50). Requirements: (1) even the number of decimal output. (2) Statistics and even-numbered and odd-numbered and, and the order of smallest number of output of these two. (3) use the metric system shows the second largest number.)