输出螺旋矩阵

//使用gcc完成一个matrix
//要求输入两个整数m，n ，得到一个螺旋矩阵。
//如输入3,4返回
//A B C D
//J K L E
//I H G F

#include <stdio.h>
#include <string.h>
const int ROW_SIZE = 10;
const int COLUMN_SIZE =10;

int main()
{
    int array[ROW_SIZE][COLUMN_SIZE];
    memset(array, 0, sizeof(array));
    int i,j;

    int x = 0;
    int y = 0;
    int M,N;
    printf("请输入M，N
");
    scanf("%d%d",&M,&N);
    int totalStep = M*N;
    /*
     * 0 turn right
     * 1 turn down
     * 2 turn left
     * 3 turn up
     */
    int dir = 0;
    int count = 65;
    while(1){
        array[x][y] = count;
    
        if(0 == dir){
            if( ( (y+1) == N) || (array[x][y+1] != 0) ){
                dir = (dir+1)%4;
                x = x + 1;
            }
            else{
                y = y + 1;
            }
        }
        else if(1 == dir){
            if( ( (x+1) == M) || (array[x+1][y] != 0) ){
                dir = (dir + 1)%4;
                y = y -1;
            }
            else{
                x = x + 1;
            }
        }
        else if(2 == dir){
            if( ( (y-1) < 0) || (array[x][y-1] != 0) ){
                dir = (dir + 1)%4;
                x = x - 1;
            }
            else{
                y = y - 1;
            }
        }
        else if(3 == dir){
            if( ( (x-1) < 0) || (array[x-1][y] != 0) ){
                dir = (dir + 1)%4;
                y = y + 1;
            }
            else{
                x = x - 1;
            }
        }

        //break or add moveStep
        if(count == totalStep+64)
            break;
        else
            count++;
    }

    //print
    for( i = 0; i < M; i++){
        for( j= 0; j < N; j++)
            printf("%3c", array[i][j]);
        printf("
");
    }
    return 0;
}