为啥y老是10的？！麻烦解说下！谢谢！
                #include <stdio.h>
                int main() 
                { 
                    int x;
                    int y;
                    for(x=0;x<10;x++)
                    {
                        for(y=0;y<10;y++)
                           if(y==0)
                              continue;
                        printf("xx%dxx%dxx\n",x,y); 
                    }
                    return 0;
                }