矩阵旋转90度 写好了 大家帮我指一下缺陷

#include"stdio.h"
#define N 10
void main()
{
    //0 is current_array,1 is rotated_array
    int arr[2][N][N],i,j,arr_col,arr_row,dim_x,dim_y,temp=0;
    printf("please input the dim:(the format is dim1 * dim2)\n");
    scanf("%d*%d",&dim_x,&dim_y);//input the dim
    for(i=0;i<dim_x;i++)      //init the array
        for(j=0;j<dim_y;j++)
            arr[0][i][j]=++temp;            
    printf("the current array:\n");
    for(i=0;i<dim_x;i++)  //output the array
    {
        for(j=0;j<dim_y;j++)
            printf("%6d",arr[0][i][j]);
            printf("\n");
    }
    arr_col=dim_x-1;
    for(i=0;i<dim_x;i++)//rotate the arr_current,resemble the stack
    {
        arr_row=0;
        for(j=0;j<dim_y;j++)
            {                
                arr[1][arr_row][arr_col]=arr[0][i][j];
                arr_row++;
            }
            arr_col--;
    }
            
    printf("the rotated array by 90 angle :\n");
    for(i=0;i<dim_y;i++)    //output the arr_rotated
    {
        for(j=0;j<dim_x;j++)
            printf("%6d",arr[1][i][j]);
            printf("\n");
    }
                
}