Using C language to realize three piece chess games

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Catalog

Preface

This article is suitable for c Language foundation partner , If the foundation is slightly weak, it may seem a little difficult , But it will not affect the grasp of ideas . This type of program requires some foundation , It can reflect your overall mastery of the knowledge you have learned    Before reading this article , I hope you have mastered the following knowledge, including     The header file   Source file definition and function     Function and function parameter transfer function parameter transfer      loop   Array （ Two dimensional array ）

Text

introduce

Code programming

1. menu menu()

2. The board Board()

3. Playing chess   Move()

4. Judging rules or game rules   Judge()

The latter

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Preface

This article is suitable for c Language foundation partner , If the foundation is slightly weak, it may seem a little difficult , But it will not affect the grasp of ideas . This type of program requires some foundation , It can reflect your overall mastery of the knowledge you have learned    Before reading this article , I hope you have mastered the following knowledge
Include     The header file   Source file definition and function     Function and function parameter transfer function parameter transfer      loop   Array （ Two dimensional array ）

This article will show the idea of writing programs , And code implementation

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Text

introduce

What elements should Sanzi have ? Or you want to design a small game , What function do you want it to have ?

Take Sanzi chess as an example , I think it should have the following functions

1. menu

2. The board

3. Players and computers play chess

4. Rule of judgement

ok, The function has been figured out , Then start writing them out in a program

Code programming

1. menu menu()

The code is as follows ：

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

} Menus can be designed by yourself , Just look good to you 

2. The board Board()

What functions do you think the chessboard should have ?

I think it should have initialization function InitializeBoard()    and     Display function DisplayBoard()

So we have the following code

     // Use an array to store the pieces we want to play 
    char Board[ROW][COL] = { 0 };
// Board initialization     The elements in the array are spaces , Visually, the chessboard looks empty 
void InitializeBoard(char Board[ROW][COL], int row, int col) 
{
    int i = 0; 
    int j = 0;
    for (i = 0; i < row; i++)
    {

        for (j = 0; j < col; j++)
        {
            Board[i][j] = ' ';

        }
    }

}
void DisplayBoard(char Board[ROW][COL], int row, int col)
{
    int i = 0;
    for (i = 0; i < row; i++)
    {
        int j = 0;
        for (j = 0; j < col; j++)// Print page i The content of the line 
        {
            // Print data lines 
            printf(" %c ", Board[i][j]);// Corresponding to 1 Green rounded square 
            if (j < col - 1)// The last column does not need to be printed "|"
            {
                printf("|");
            }
        }
        printf("\n");// Line feed ready to print split lines 
        // Print split lines 
        if (i < row - 1)// There is no need to split the last line 
        {            
            for (j = 0; j < col; j++)
            {
                printf("---");
                if (j < col - 1)
                {
                    printf("|");
                }
            }
            printf("\n");
        }
    }
} There may be some friends here who will be right DisplayBoard() There is a little doubt about the way of writing , I hope the following picture can dispel your doubts 

The red ellipse on the left represents Board[i][j], Dexter 1 The green rounded box No. represents "    Board[i][j]      " Corresponding to the code   " %c "( Notice that the middle space is a space )    2 The No. box represents the vertical dividing line Corresponding to     "|"  , that 3 You should know what the box represents , you 're right , It's in the code "---"

Why do you want to set it like this ? That's because this is the smallest thing to print out the chessboard " Cycle unit " I won't elaborate on the reasons here , After all, this is not the point of the code . If you have doubts, you can confide in me

3. Playing chess   Move()

There are two players ( Players and computers ) Naturally, there are two functions

Players play chess PlayerMove()    and   The computer plays chess ComputerMove()

Because we have initialized the elements of the chessboard as spaces above, if you want to play chess Replace the space of the corresponding coordinate on the chessboard with the character representing the player's chess pieces   "*"   "#" Just do it , Here we use "*" Pieces representing players ,"#" Chess pieces representing computers , Of course, you can use whatever you want to express , As long as it's a character .

void PlayerMove(char Board[ROW][COL], int row, int col)
{
	// Use coordinates to represent the position 
	int x = 0;
	int y = 0;
	printf(" Players go \n");
	while (1)// Considering that players may accidentally enter wrong coordinates ,so  Should design while loop 
	{
		printf(" Please enter the coordinates you want to enter :  ");
		scanf_s("%d%d", &x, &y);
		// Judge x,y The validity of coordinates 
		if (x >= 1 && x <= row && y >= 1 && y <= col)
		{
			if (Board[x - 1][y - 1] == ' ')// user friendly design , There is no guarantee that every player knows the meaning of array subscript, so it is necessary to subtract one 
			{
				Board[x - 1][y - 1] = '*';
				break;
			}
			else
			{
				printf(" The coordinates are occupied \n");
			}
		}
		else
		{
			printf(" Illegal coordinates , Please re-enter !\n");
		}
	}
}

// Computer chess is simple , Go wherever there is a blank space 
void ComputerMove(char Board[ROW][COL], int row, int col)
{
	int x = 0;
	int y = 0;
	printf(" Computer go \n");
	while (1)
	{
		// utilize rand Function constantly generates random numbers 
		x = rand() % row;
		y = rand() % col;
		if (Board[x][y] == ' ')// The computer knows the definition of array ,so  There is no one minus here 
		{
			Board[x][y] = '#';
			break;
		}
	}

}

4. Judging rules or game rules   Judge()

Three piece chess three piece chess , As the name suggests, it is a three piece chess ( Your boy is lying !) To make fun of

There are only four rules to judge whether you win or lose     Three rows, three columns, two diagonals , As long as the chess pieces on these four lines are consistent, you will win

Of course, there should also be a function IsFull() Together to judge the current game state Is it a draw , Players win , Computer wins , Or should we continue the game

The code is as follows

int IsFull(char Board[ROW][COL], int row, int col)
{
	int i = 0;
	int j = 0;
	for (i = 0; i < row; i++)
	{
		for (j = 0; j < col; j++)
		{
			if (Board[i][j] == ' ')
			{
				return 0;// Not full 
			}
		}
	}
	return 1;// Full of 
}

char Judge(char Board[ROW][COL], int row, int col)
{
	int i = 0;
	// Three horizontal lines 
	for (i = 0; i < row; i++)
	{
		if (Board[i][0] == Board[i][1] && Board[i][1] == Board[i][2] && Board[i][1] != ' ')
		{
			return Board[i][1];
		}
	}
	// Vertical three column 
	for (i = 0; i < col; i++)
	{
		if (Board[0][i] == Board[1][i] && Board[1][i] == Board[2][i] && Board[1][i] != ' ')
		{
			return Board[1][i];
		}
	}
	// Two diagonals 
	
	if (Board[0][0] == Board[1][1] && Board[1][1] == Board[2][2] && Board[1][1] != ' ')
		return Board[1][1];

	if (Board[2][0] == Board[1][1] && Board[1][1] == Board[0][2] && Board[1][1] != ' ')
		return Board[1][1];
	// Judge if it's a draw 
	if (1 == IsFull(Board, ROW, COL))
	{
		return "Q";
	}
	// continue 
	return 'C';
}

In terms of three lines and three columns, I think the code we write should be similar

But in the writing of the two diagonals, some friends will say , Since three lines and three columns can be expressed in cycles , Then the two diagonals should also be ok

for (i = 0; i < row; i++)// Top left - The lower right 
	{
		if (Board[i][i] == Board[i + 1][i + 1])
			continue;
		else
			break;
	}
	for (i = 0; i < row; i++)// The lower left - The upper right 
	{
		if (Board[i][row-1-i] == Board[i + 1][row -2-i])// When i=2 The array will cross the boundary when 
			continue;
		else
			break;
	}

Yes , No problem in thinking , It will just cross the border , Can it be avoided ? The answer is yes . Just define ROW and COL When , Add more 2, such as , This program is a three piece chess ,ROW,COL by 3, Just define them as 5, Let the whole chessboard circle more , We are in the Board[][] When an array is operated, only the 1-3 That's it . Here is only the idea , If you are interested, you can try it yourself , I believe if you can try, you can find out n The writing method of Ziqi .

The global code is as follows

There are three plates , A header file game.h, Two source files test.c   game.c

game.h

// Function declaration part 

#define ROW 3
#define COL 3

#include <stdio.h>
#include <stdlib.h>
#include <time.h>

// Statement 
void InitializeBoard(char Board[ROW][COL], int row, int col);
void DisplayBoard(char Board[ROW][COL], int row, int col);
void PlayerMove(char Board[ROW][COL], int row, int col);
void ComputerMove(char Board[ROW][COL], int row, int col);


// Tell us about four game states 
// Game player wins  - '*'
// Computers win  - '#'
// It ends in a draw    - 'Q'   Use a single character to express ow , Don't use strings to show your high English level , The more concise the better 
// continue    - 'C'

char Judge(char Board[ROW][COL], int row, int col);

game.c

// Game module    Function definition 

#include<stdio.h>
#include "game.h"


void InitializeBoard(char Board[ROW][COL], int row, int col) 
{
	int i = 0; 
	int j = 0;
	for (i = 0; i < row; i++)
	{

		for (j = 0; j < col; j++)
		{
			Board[i][j] = ' ';

		}
	}

}


void DisplayBoard(char Board[ROW][COL], int row, int col)
{
	int i = 0;
	for (i = 0; i < row; i++)
	{
		int j = 0;
		for (j = 0; j < col; j++)// Print page i The content of the line 
		{
			// Print data lines 
			printf(" %c ", Board[i][j]);// Corresponding to 1 Green rounded square 
			if (j < col - 1)// The last column does not need to be printed "|"
			{
				printf("|");
			}
		}
		printf("\n");// Line feed ready to print split lines 
		// Print split lines 
		if (i < row - 1)// There is no need to split the last line 
		{			
			for (j = 0; j < col; j++)
			{
				printf("---");
				if (j < col - 1)
				{
					printf("|");
				}
			}
			printf("\n");
		}
	}
}




void PlayerMove(char Board[ROW][COL], int row, int col)
{
	// Use coordinates to represent the position 
	int x = 0;
	int y = 0;
	printf(" Players go \n");
	while (1)// Considering that players may accidentally enter wrong coordinates ,so  Should design while loop 
	{
		printf(" Please enter the coordinates you want to enter :  ");
		scanf_s("%d%d", &x, &y);
		// Judge x,y The validity of coordinates 
		if (x >= 1 && x <= row && y >= 1 && y <= col)
		{
			if (Board[x - 1][y - 1] == ' ')// user friendly design , There is no guarantee that every player knows the meaning of array subscript, so it is necessary to subtract one 
			{
				Board[x - 1][y - 1] = '*';
				break;
			}
			else
			{
				printf(" The coordinates are occupied \n");
			}
		}
		else
		{
			printf(" Illegal coordinates , Please re-enter !\n");
		}
	}
}
// Computer chess is simple , Go wherever there is a blank space 
void ComputerMove(char Board[ROW][COL], int row, int col)
{
	int x = 0;
	int y = 0;
	printf(" Computer go \n");
	while (1)
	{
		// utilize rand Function constantly generates random numbers 
		x = rand() % row;
		y = rand() % col;
		if (Board[x][y] == ' ')// The computer knows the definition of array ,so  There is no one minus here 
		{
			Board[x][y] = '#';
			break;
		}
	}

}

// Judge whether the chessboard is full 
// return 1 The chessboard is full 
// return 0, The chessboard is not full 

int IsFull(char Board[ROW][COL], int row, int col)
{
	int i = 0;
	int j = 0;
	for (i = 0; i < row; i++)
	{
		for (j = 0; j < col; j++)
		{
			if (Board[i][j] == ' ')
			{
				return 0;// Not full 
			}
		}
	}
	return 1;// Full of 
}
// Three rows, three columns, two diagonals 
char Judge(char Board[ROW][COL], int row, int col)
{
	int i = 0;
	// Three horizontal lines 
	for (i = 0; i < row; i++)
	{
		if (Board[i][0] == Board[i][1] && Board[i][1] == Board[i][2] && Board[i][1] != ' ')
		{
			return Board[i][1];
		}
	}
	// Vertical three column 
	for (i = 0; i < col; i++)
	{
		if (Board[0][i] == Board[1][i] && Board[1][i] == Board[2][i] && Board[1][i] != ' ')
		{
			return Board[1][i];
		}
	}
	// Two diagonals 
	
	if (Board[0][0] == Board[1][1] && Board[1][1] == Board[2][2] && Board[1][1] != ' ')
		return Board[1][1];

	if (Board[2][0] == Board[1][1] && Board[1][1] == Board[0][2] && Board[1][1] != ' ')
		return Board[1][1];
	// Judge if it's a draw 
	if (1 == IsFull(Board, ROW, COL))
	{
		return "Q";
	}
	// continue 
	return 'C';
}

test.c

// To test our three piece chess program    Test module 
#include "game.h"
void menu()
{
	printf("************ Three chess game ***********\n");
	printf("****** 1. play *** 0. exit ******\n");
	printf("*********************************\n");

}
void game() 
{
	// Deposit Judge() The return value of the function 
	char ret = 0;
	// Use an array to store the pieces we want to play 
	char Board[ROW][COL] = { 0 };
	// Board initialization     The elements in the array are spaces , Visually, the chessboard looks empty 
	InitializeBoard(Board,ROW,COL);// Because you want to use this initialization function , You have to declare , The initialization function is game Part of the function , So we should  game.h  This header file declares it 
	// Print chessboard 
	DisplayBoard(Board, ROW, COL);
	// Playing chess , That is to say " Fill in the blanks ", Put the... On the initialized chessboard    ' '    Replace with the chess pieces that players and computers want to go 
	while (1)
	{
		// Players go 
	    PlayerMove(Board, ROW, COL);
		DisplayBoard(Board, ROW, COL);
		
		ret=Judge(Board, ROW, COL);
          // Judge whether the player wins 
		if (ret != 'C')
		{
			break;
		}
		// Computer go 
		ComputerMove(Board,ROW,COL);
		DisplayBoard(Board, ROW, COL);
		// Judge whether the computer wins 
		ret = Judge(Board, ROW, COL);
		if (ret != 'C')
		{
			break;
		}
	
	}
     // Judge the remaining three situations 
	if (ret == '*')
	{
		printf(" Game player wins \n");
	}
	else if (ret == '#')
	{
		printf(" Computers win \n");
	}
	else
	{
		printf(" It ends in a draw \n");
	}
}
void test()
{ 
	int choice;
	srand((unsigned int)time(NULL));// Time stamp , coordination rand function 
	do
	{
		menu();
		printf(" Please select :\n");
	   
		scanf_s("%d", &choice);
		switch (choice)
		{
		case 1:
			printf(" Start the game \n");//system clc
			game();
			break;
		case 0:
			printf(" Quit the game ");
			break;
		default:
			printf(" The input is invalid , Please re-enter \n");

		}

	} while (choice);


}


int main()
{

	test();
	return 0;
}

This is the sub child after three files are created  

  Finally, I attach the between me and the computer " game "

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The latter

Some people may say that if only you could click with the mouse , Where you click, you'll be there , After all, this is a small program , Not a positive

A real game , And the editor's level is limited , Just started learning , It's a little difficult to realize , Today is a foreshadowing , Wait for me

I've almost learned , I'll make it up

If you want to communicate, you can comment or send a private message

Finally, I hope you can draw a mind map when doing similar problems with high comprehensiveness , benefits    have a lucid brain , Don't think about

Step by step , Always tell yourself what to do at this step , What I want to achieve

The full text is more than 8800 words , After watching the screen for so long, you should pay attention to protecting your eyes

toodles !