写出程序运行结果
#include
int main()
{
       int i, j,n=1,a[12];
       for (i=0;i<12;i++)
       {
              a[i]=n;
              n++;
       }
       n=0;
       for (i=0;i<3;i++)
       {
              for (j=1;j<=4;j++)
              { 
                     printf("%-4d", a[n]);
                     n++;
              }
              printf("");
       }
       return 0;
}