环形打印矩阵

#include <iostream>
using namespace std;

int main()
{
	int a[10][10],count = 1;
	for (int k = 0,n = 10;k < n;n--,k++)//
	{//k表示第一行，n表示最后一行。4个FOR循环后，减两行，因此n--,k++
		for (int i = k;i < n;i++)
			a[k][i] = count++;
		for (int i = k + 1;i < n;i++)
			a[i][n-1] = count++;
		for(int i = n - 2;i >= k;i--)
			a[n-1][i] = count++;
		for(int i = n - 2;i > k;i--)
			a[i][k] = count++;	
	}
	
	for (int i = 0;i < 10;i++)
	{
		for (int j = 0;j < 10;j++)
			cout << a[i][j] << "	" ;
		cout << endl;
	}

	return 0;
}