(4) 简化的歌德巴赫猜想：任何一个大于6的偶数均可以表示为两个素数之和。现从键盘输入一个0～65535之间的无符号整数，试验证歌德巴赫猜想。

如输入数12，输出：

12=5+7

如输入数20,输出：

20=3+17

20=7+13

如输入数7,输出：

Must be even

如输入数3,输出：

Must be greater than or equal to 6-to simplify the GeDeBaHe guess: any more than a 6 even can be expressed as the sum of two prime Numbers. Now from the keyboard a 0 to 65535 between unsigned integer, test certificate GeDeBaHe guess.

If the input number 12, output:

12 = 5+ 7

If the input number 20, output:

20 = 3+ 17

20 = 7+ 13

If the input number 7, output:

Must be even

If the input number 3, output:

Must be greater than or equal to six