1.Four in row
Given a positive integer,tell wherther it is equal to the sum of four consecutive integers.
Input
A positive integer(<2的31次幂)，each case will be on separate line .A zero(0)denotes the end of input.
Output
The phrase"is not the sum of four consecutive integers"or the phrase"is the sum of four consecutive integer "where is the number in qusetion.
Example
in this example,2=-1+0+1+2,and82=19+20+21+22,5 and 41are not of the correct form.
Input
2
5
41
82
0
Output
2 is the sum of four consecutive integers.
5 is not the sum of four consecutive integers.
41 is not the sum of four consecutive integers.
82 is the sum of four consecutive integers

a + (a+1) + (a+2) + (a+3)=4*a+6;

换句话说,就是如果一个数-6后可以整除4的话,那就可以表示成所要求的形式,否则就不可以.
(2-6)%4=0;
(82-6)%4=0
41-6=35%4=3

哪的题目.LZ给个地址链接.

这是一本书上的，我当时也是这么想的，但是老师说太简单了要我完善下。汗！！我都不知道具体怎么完善！！

设输入的数为a
只要满足a%4=2就可以了！

说的不错,化简一下,是%4=2;