C language implementation of three chess

Catalog

Sanzi

Test logic

The game logic

Initialize chessboard

Playing chess

Judge victory

---

I believe all of you have played Sanzi and minesweeping , But who has ever thought that he can realize three piece chess on the computer ？ Let's realize it together today .

Sanzi

First of all, let's watch Sanzi , The realization of Sanzi chess is divided into two steps , First, test logic , Game logic .

Test logic

#define _CRT_SECURE_NO_WARNINGS 1

#include "game.h"


void menu()
{
	printf("******************\n");
	printf("******1.play******\n");
	printf("******0.exit******\n");
	printf("******************\n");
}


void game()
{
	char arr[ROW][COL] = { 0 };
	init_arr(arr, ROW, COL);
	show_arr(arr, ROW, COL);
}

int main()
{
	int input = 0;
	do
	{
		menu();
		printf(" Please select ->: ");
		scanf("%d", &input);
		switch (input)
		{
		case 1:
			printf(" Start the game \n");
			game();
			break;
		case 0:
			printf(" Quit the game ");
			break;
		default:
			printf(" Input error, please input again \n");
			break;
		}
	} while (input);
	return 0;
}

Test logic refers to test.c Basic logic in Like here , If the player chooses 1 Then play the game , choice 0 Then quit the game , Select other to remind you of input errors , Request to re-enter .

Then let's look at the logic of the game .

The game logic

The logic of the game is divided into three steps , You must first have a plate for you to play chess , Then you have to play chess on the chessboard , Finally, you have to know whether you win or lose . So our game logic is divided into these three steps ： Initialize chessboard , Players and computers play chess , Judgement of winning or losing .

Initialize chessboard

First, give a two-dimensional array with three rows and three columns , Initialize each of its elements as a space

We hope to be able to print the contents shown on the screen , Then we should write two functions , An initialization array , Print the array in the format shown in

This is the header code

#define _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>
#define ROW 3
#define COL 3 // The settings here are convenient for future changes 

void init_arr(char arr[ROW][COL], int row, int col);// Lowercase is to avoid conflicts with constant names 

void show_arr(char arr[ROW][COL], int row, int col);// Print array 

void init_arr(char arr[ROW][COL], int row, int col)
{
	int i = 0;
	int j = 0;
	for (i = 0; i < row; i++)
	{
		for (j = 0; j < col; j++)
		{
			arr[i][j] = ' ';
		}
	}
}

  This is the initialization function code

void show_arr(char arr[ROW][COL], int row, int col)
{
	int i = 0;
	int j = 0;
	for (i = 0; i < row; i++)
	{
		for (j = 0; j < col; j++)
		{
			printf(" %c ", arr[i][j]);
			if (j < col - 1)
			{
				printf("|");
			}
		}
		printf("\n");
		for (j = 0; j < col; j++) 
		{
			printf("---");
			if (j < col - 1)
			{
				printf("|");
			}
		}
		printf("\n");
	}
}

This is the print code

In this case, our chessboard will be printed , Now let's play chess .

Playing chess

Chess is divided into computer chess and player chess .

Players need to manually input coordinates when playing chess , And you need to judge whether the input coordinates exceed the range of the array , Or whether it is occupied . Computer chess can be played by setting random numbers , And can limit its coordinate range , So the computer only needs to judge whether it is occupied . Set the player to play chess *, Computer chess is set to #. First, let's watch players play chess , Players need to manually input coordinates when playing chess , So first create two variables x and y, Then judge whether it crosses the boundary or uses . Code up ！

void player(char arr[ROW][COL], int row, int col)
{
	int x = 0;
	int y = 0;
	while (1)
	{
		printf(" Please enter the coordinates ->: ");
		scanf("%d %d", &x, &y);
		if (x >= 1 && x <= row && y >= 1 && y <= col)
		{
			if (' ' == arr[x - 1][y - 1])
			{
				arr[x - 1][y - 1] = '*';
				break;
			}
			else
			{
				printf(" This coordinate is occupied , Please re-enter ");
			}
		}
		else
		{
			printf(" Illegal coordinates , Please re-enter ");
		}
	}
}

Then the computer plays chess , I need to use rand Function to set a random number , And there is no need to judge whether it crosses the boundary , Other parts are the same as players playing chess .

void computer(char arr[ROW][COL], int row, int col)
{
	while (1)
	{
		int x = rand() % row;
		int y = rand() % col;
		if (' ' == arr[x][y])
		{
			arr[x][y] = '#';
			break;
		}
	}
}

Judge victory

There are four situations , The winning players are , Computers win , Draw or not over continue .

So let's write a function , Make players win and return *, The computer won back #, Draw back Q, Keep going back c

There are three ways to win , List three , There are three diagonals . Judge separately .

To judge a draw, you need to know whether the chessboard is full , So we can write another function to judge whether the chessboard is full , Return when full 1,

Otherwise return to zero . Code up ！

Judge the victory

	int i = 0;
	int j = 0;
	// Line victory 
	for (i = 0; i < row; i++)
	{
		int count = 0;
		for (j = 0; j < col-1; j++)
		{
			if (arr[i][j] == arr[i][j + 1] && arr[i][j] != ' ')
			{
				count++;
				if (count == 2)
				{
					return arr[i][j];
				}
			}
			else
			{
				break;
			}
		}
	}

for (j = 0; j < col; j++)
	{

		int count = 0;
		for (i = 0; i < row - 1; i++)
		{
			if (arr[i][j] == arr[i+1][j] && arr[i][j] != ' ')
			{
				count++;
				if (count == row - 1)
				{
					return arr[i][j];
				}
			}
			else
			{
				break;
			}
		}
	}

 

	// Diagonally 
	// Principal diagonal 
	int count = 0;
	for (i = 0; i < row-1; i++)
	{
			
			if (arr[i][i] == arr[i + 1][i + 1] && arr[i][i] != ' ')
			{
				count++;
				if (count == row - 1)
				{
					return arr[i][i];
				}
			}
			else
				break;
		
	}

// Anti diagonal 
	for (i = 0; i < row; i++)
	{
		for (j = 1; j < col; j++)
		{
			int count = 0;
			if (arr[i][col - j] == arr[i + 1][col - j - 1]&& arr[i][col-j] != ' ')
			{
				count++;
				if (count == row - 1)
				{
					return arr[i][i];
				}
			}
			else
				break;
		}
	}

int is_full(char arr[ROW][COL], int row, int col)
{
	int i = 0;
	int j = 0;
	int count = 0;
	for (i = 0; i < row; i++)
	{
		for (j = 0; j < col; j++)
		{
			if (' ' == arr[i][j])
				return 0;
			else
				count++;
			if (count == row * col)
				return 1;
		}
	}
}


if (1 == is_full(arr, row, col))
	{
		return 'Q';
	}

When we change the defined constant into 5 when , We can also play Gobang .

 

  The computer is a little stupid , But after that, I'll come back and write an awesome Gobang ！