functions.h

风格经典！！！！ 小游戏 新手上路。

/*Initialize:initalize grid map.
Pre:None.
Post:All the cell in the grid map have been set to initial configuration of living cells.*/

void Initialize(Grid map)
{
	int row,col;     /*coordinates of a cell*/
	printf("This program is a simulation of the game of life.\n "
		   "The grid has a size of %d rows and %d columns.\n",MAXROW,MAXCOL);
	for(row=0;row<=MAXROW+1;row++)
		for(col=0;col<=MAXCOL+1;col++)
			map[row][col]=DEAD;             /*Set all cells empty ,includeing the hedge.*/
	printf("On each line give a pair of coordinates for a living cell.\n"
		   "Terminate the list with special pair 00.\n");
	scanf("%d%d",&row,&col);
	while(row!=0||col!=0)               /*if you want to stop,input "0 0" */
	{
		if(row>=1&&row<=MAXROW&&col>=1&&col<=MAXCOL)
			map[row][col]=ALIVE;
		else
			printf("values are not within range!\n");
		scanf("%d%d",&row,&col);
	}
	while(getchar()!='\n')
		;
}




/*Writemap:diplay grid map.
Pre: The retangular array map contains the current life configuration.
Post: The current life configuration is written for the user.*/

void Writemap(Grid map)
{
	int row,col;
	putchar('\n');
	putchar('\n');
	for(row=1;row<=MAXROW;row++)
	{
		for(col=1;col<=MAXCOL;col++)
		{
			if(col==MAXCOL+1)
				printf("\n");
			if(map[row][col]==ALIVE)
				putchar('*');
			else putchar('-');
		}
		putchar('\n');
	}
}





/*Neighborcount:count neighbors of row,col.
Pre: The pair row ,col is a valid cell in a life configuration.
Post: The function returns the noumber of living neighbors of theliving cell.       */

int NeighborCount(Grid map,int row,int col)
{
	int i;                     /*row of neighbor of the cell(row,col)*/
	int j;                     /*column of a neighbor of the cell(row,col)*/
	int count=0;               /*counter of living neighbors*/
	for(i=row-1;i<=row+1;i++)
		for(j=col-1;j<=col+1;j++)
			if(map[i][j]==ALIVE)
				count++;
	if(map[row][col]==ALIVE)
		count--;
	return count;
}

/*Copymap: copy newmap into map.
Pre: The grid newmap has the current life configuration.
Post: The grid map has a copy. */

void Copymap(Grid map,Grid newmap)
{
	int row,col;
	for(row=0;row<=MAXROW+1;row++)
		for(col=0;col<=MAXCOL+1;col++)
			map[row][col]=newmap[row][col];
}




/*UserSaysYes: TRUE if the user wants to continue execution.
Pre: NONE.
Post: Returns TRUE if the user's answer begins with either y or Y ,FALSE if the user 
      respond with any response beginning with n or N.*/

Boolean UserSaysYes(void)
{
	int c;
	printf("y,n?");
	do{
		while((c=getchar())=='\n')
			;
		if(c=='y'||c=='Y'||c=='n'||c=='N')
			return ((enum Boolean)(c=='y'||c=='Y'));
		printf("Please respond by typing one of the letters 'y' or 'Y'\n");
	}while(1);

}