称号：考虑到用户层面。打印出指定的矩阵，例如，一个给定的用户10，例如，下面的输出应被视为在图：

程序如下所示：

#include <stdio.h>

#include <malloc.h>

int main()

{

	int dimension;

	int *p;

	int startx, starty, endx, endy;

	int i, j, value = 0;

	printf("Please input dimension:");

	scanf("%d", &dimension);

	p = (int *)malloc(sizeof(int)*dimension*dimension);

	startx = 0;

	starty = 0;

	endx = dimension - 1;

	endy = dimension - 1;

	while(startx <= endx)

	{

		if(startx == endx) //仅仅剩一个点须要赋值

		{

			p[endy*dimension+endx] = value++;

			break;

		}

		for(i = starty, j = startx; i <= endy; i++) //从上到下

		{

			p[i*dimension+j] = value ++;

		}

		for(i-=1, j = startx+1; j <= endx; j++) //从左到右, i在从上到下的输入中已经超出了矩阵范围，所以须要减1

		{

			p[i*dimension+j] = value++;

		}

		for(j-=1, i -= 1; i >= starty; i--) //从下到上

		{

			p[i*dimension+j] = value++;

		}

		for(i+=1, j -= 1; j > starty; j--) //从右到左

		{

			p[i*dimension+j] = value++;

		}

		startx ++;

		starty ++;

		endx --;

		endy --;

	}

	for(i = 0; i < dimension*dimension; i++)

	{

		if(0 == i%dimension)

			printf("\n");

		printf("%3d ", p[i]);

	}

	printf("\n\n");

	return 0;

}

程序执行结果：