呵呵！我只比录取分数线高一分。管它什么大学，有实力就行啊，自己努力就行，我现在不是很菜嘛！

谢谢了！有时间看一看！

呵呵，这样夸我我会骄傲的。呵呵，以后我会经常来向请教你们，麻烦你们的！

还是那里不对！细心的看一下！
#include <stdio.h>
#include <stdlib.h>

int sum(long a)
{
long i = 2;
while(i*i<a)
{
if(a%i==0)
{
return(0);
}
i++;
}
return(1);
}
int main()
{
long a, num;
while(EOF != (scanf("%ld", &num)) && num%2==0&&num!=0)
{
a = 3;
while(a < num)
{
if(sum(a)&&sum(num - a))
{
printf("%ld = %ld + %ld\n", num, a,num - a);
break;
}
a += 2;
}
if(!(sum(a)&&sum(num - a)))
printf("Goldbach's conjecture is wrong.\n");
}

return 0;
}

循环结束条件为(a<num/2);这里对吗？while(i*i<=a)
呵呵！楼上的同学！咱们都一样！共同进步嘛！

HIT-Online Judge,process result is Okey.
result has 50006 wrong answers.
对于第 31 楼的答案！呵呵！我们的电脑评判结果是这个！

如果我这样写的话就出现了超时！HIT-Online Judge,process result is Time limit exceed.

#include <stdio.h>
#include <stdlib.h>
#include <math.h>

int sum(long a)
{
long i = 2;
while(i < a/2)
{
if(a%i==0)
{
return(0);
}
i++;
}
return(1);
}
int main()
{
long a, num;
while(EOF != (scanf("%ld", &num)) && num%2==0 && num!=0)
{
a = 3;
while(a < num/2)
{
if(sum(a)&&sum(num - a))
{
printf("%ld = %ld + %ld\n", num, a,num - a);
break;
}
a += 2;
}
}

return 0;
}

呵呵！版主做的是正确的！