加个计数器
static void Main(string[] args)
{
int count=0;
for (int i = 0; i <= 6; i++)
{
for (int j = 0; j <= 6; j++)
{
if (i + j == 6)
{
Console.Write("{0} + {1} = 6 ",i,j);
if(count %2==0 && count>0) Console.WriteLine();
count++;
}
}
}
Console.ReadKey();
}