如何使用C语言实现细菌的繁殖与扩散

#include<stdio.h>
int main()
{
	int old[9][9], birth[9][9];//旧的培养基和新的培养基，用于递推
	int m, n;//初始中央细菌数以及递推的天数
	int i, j, p;
	scanf("%d%d", &m, &n);
	for (i = 0;i < 9;i++)
		for (j = 0;j < 9;j++)
		{
			birth[i][j] = 0;//变量的初始化
		}
	birth[4][4] = m;//中央细菌已经长出
	for (p = 1;p <= n;p++)//开始递推
	{
		for (i = 0;i < 9;i++)
			for (j = 0;j < 9;j++)
			{
				old[i][j] = birth[i][j];//旧培养基相当于一个储存容器，储存上一天的培养基情况
				birth[i][j] = 2 * birth[i][j];//每个位置上的每个旧细菌生两个崽，然后凋亡
			}
		for (i = 0;i < 9;i++)
			for (j = 0;j < 9;j++)
			{
				if (old[i][j] != 0)//如果旧培养基上某个位置有细菌，就在新培养基上它的周围生出一圈崽儿（记得每个细菌各生一圈儿……）
				{
					birth[i - 1][j - 1] = birth[i - 1][j - 1] + old[i][j];
					birth[i - 1][j] = birth[i - 1][j] + old[i][j];
					birth[i - 1][j + 1] = birth[i - 1][j + 1] + old[i][j];
					birth[i][j - 1] = birth[i][j - 1] + old[i][j];
					birth[i][j + 1] = birth[i][j + 1] + old[i][j];
					birth[i + 1][j - 1] = birth[i + 1][j - 1] + old[i][j];
					birth[i + 1][j] = birth[i + 1][j] + old[i][j];
					birth[i + 1][j + 1] = birth[i + 1][j + 1] + old[i][j];
				}
			}
	}
	for (i = 0;i < 9;i++)
	{
		for (j = 0;j < 9;j++)
			printf("%d ", birth[i][j]);
		printf("\n");
	}
	return 0;
}