C language -- game of Sanzi

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Three chess game

Problem description ：
3*3 On the chessboard of , As long as three identical pieces appear on a line, you will win （ Players or computers ）; If the chessboard is full and there are no three pieces, a line is drawn .
Specific details ：

1. Initialize chessboard ( Initialize with spaces )

// Initialize chessboard 
void initChess(char chessbox[ROW][COL]){
   
   
	for (int row = 0; row < ROW; row++){
   
   
		for (int col = 0; col < COL; col++){
   
   
			chessbox[row][col] = ' ';
		}
	}
}

1. Print chessboard

// Print chessboard 
void printChess(char chessbox[ROW][COL]){
   
   
	system("cls");
	printf("+---+---+---+\n");
	for (int row = 0; row < ROW; row++){
   
   
		printf("| %c | %c | %c |\n", 
			chessbox[row][0], chessbox[row][1],
			chessbox[row][2]);
		printf("+---+---+---+\n");
	}
}

1. Computer move later ( use o It means that the computer is down )

// Computer move later ( use o Express )
void computerMove(char chessbox[ROW][COL]){
   
   
	srand(time(0));
	while (1){
   
   
		int row = rand() % 3;
		int col = rand() % 3;
		if (chessbox[row][col] == ' '){
   
   
			chessbox[row][col] = 'o';
			break;
		}

	}
}

1. The player is down

// The player is down ( use x Express )
void playerMove(char chessbox[ROW][COL]){
   
   
	int row, col;
	while (1){
   
   
		printf(" Please enter your location :");
		scanf("%d %d", &row, &col);
		if (row >= 3 || col >= 3){
   
   
			printf(" The position you entered is wrong , Please re-enter :");
			continue;
		}
		if (chessbox[row][col] == ' '){
   
   
			chessbox[row][col] = 'x';
			break;
		}
		printf(" There are already pieces in this position , Please re-enter :");
	}
}

1. Three pieces, one line

• In a row or column to achieve three pieces of a line

// That's ok 
	for (int row = 0; row < ROW; row++){
   
   
		if (chessbox[row][0] != ' '
			&&chessbox[row][0] == chessbox[row][1]
			&& chessbox[row][0] == chessbox[row][2]){
   
   
			return chessbox[row][0];
		}
	}
	// Column 
	for (int col = 0; col < COL; col++){
   
   
		if (chessbox[0][col] != ' '
			&&chessbox[0][col] == chessbox[1][col]
			&& chessbox[0][col] == chessbox[2][col]){
   
   
			return chessbox[0][col];
		}
	}

• Diagonal line to achieve three pieces of a line

if (chessbox[0][0] != ' '
		&&chessbox[0][0] == chessbox[1][1]
		&& chessbox[0][0] == chessbox[2][2]){
   
   
		return chessbox[0][0];
	}
	if (chessbox[2][0] != ' '
		&&chessbox[2][0] == chessbox[1][1]
		&& chessbox[2][0] == chessbox[0][2]){
   
   
		return chessbox[2][0];
	}

1. draw

• The chessboard is full and has not won , It's a draw , It's a draw .

 Insert a code chip here 
	// draw 				
	if(isFull(checkbox)){
   
   
		return 'a';
		}					
	

1. Win lose agreement ：

• return x Win on behalf of the player

if (isWinner(chessbox) == 'x'){
   
   
			printf(" Congratulations on winning !\n");
			break;
		}

• return o For computers to win

if (isWinner(chessbox) == 'o'){
   
   
			printf(" unfortunately , You lost !\n");
			break;
		}

• return a For a draw （ A draw ）

if (isWinner(chessbox) == 'a'){
   
   
			printf(" You are on the same level as the computer !\n");
			break;
		}

1. Judge whether the chessboard is full ：

• return 1 The chessboard is full
• return 0 The chessboard is not full

// Judge whether the chessboard is full 
//1 It means full ;0 Express dissatisfaction .
int isFullChess(char chessbox[ROW][COL]){
   
   
	for (int row = 0; row < ROW; row++){
   
   
		for (int col = 0; col < COL; col++){
   
   
			// Find the space , It's not full 
			if (chessbox[row][col] == ' '){
   
   
				return 0;
			}
		}
	}
	return 1;
}

Source code :

#define  _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#include<stdlib.h>
#include<math.h>
#define ROW 3
#define COL 3
// The player is down ( use x Express )
void playerMove(char chessbox[ROW][COL]){
   
   
	int row, col;
	while (1){
   
   
		printf(" Please enter your location :");
		scanf("%d %d", &row, &col);
		if (row >= 3 || col >= 3){
   
   
			printf(" The position you entered is wrong , Please re-enter :");
			continue;
		}
		if (chessbox[row][col] == ' '){
   
   
			chessbox[row][col] = 'x';
			break;
		}
		printf(" There are already pieces in this position , Please re-enter :");
	}
}
// Computer move later ( use o Express )
void computerMove(char chessbox[ROW][COL]){
   
   
	srand(time(0));
	while (1){
   
   
		int row = rand() % 3;
		int col = rand() % 3;
		if (chessbox[row][col] == ' '){
   
   
			chessbox[row][col] = 'o';
			break;
		}

	}
}
// Initialize chessboard 
void initChess(char chessbox[ROW][COL]){
   
   
	for (int row = 0; row < ROW; row++){
   
   
		for (int col = 0; col < COL; col++){
   
   
			chessbox[row][col] = ' ';
		}
	}
}
// Print chessboard 
void printChess(char chessbox[ROW][COL]){
   
   
	system("cls");
	printf("+---+---+---+\n");
	for (int row = 0; row < ROW; row++){
   
   
		printf("| %c | %c | %c |\n", 
			chessbox[row][0], chessbox[row][1],
			chessbox[row][2]);
		printf("+---+---+---+\n");
	}
}
// Judge whether the chessboard is full , Full back 1; Return before full 0
int isFullChess(char chessbox[ROW][COL]){
   
   
	for (int row = 0; row < ROW; row++){
   
   
		for (int col = 0; col < COL; col++){
   
   
			// Find the space , It's not full 
			if (chessbox[row][col] == ' '){
   
   
				return 0;
			}
		}
	}
	return 1;
}
// Appointment : return x On behalf of the player wins ; return o On behalf of the computer wins ; return a For a draw 
char isWinner(char chessbox[ROW][COL]){
   
   
	// That's ok 
	for (int row = 0; row < ROW; row++){
   
   
		if (chessbox[row][0] != ' '
			&&chessbox[row][0] == chessbox[row][1]
			&& chessbox[row][0] == chessbox[row][2]){
   
   
			return chessbox[row][0];
		}
	}
	// Column 
	for (int col = 0; col < COL; col++){
   
   
		if (chessbox[0][col] != ' '
			&&chessbox[0][col] == chessbox[1][col]
			&& chessbox[0][col] == chessbox[2][col]){
   
   
			return chessbox[0][col];
		}
	}
	// Diagonals 
	if (chessbox[0][0] != ' '
		&&chessbox[0][0] == chessbox[1][1]
		&& chessbox[0][0] == chessbox[2][2]){
   
   
		return chessbox[0][0];
	}
	if (chessbox[2][0] != ' '
		&&chessbox[2][0] == chessbox[1][1]
		&& chessbox[2][0] == chessbox[0][2]){
   
   
		return chessbox[2][0];
	}
	// draw 
	if (isFullChess(chessbox)){
   
   
		return 'a';
	}
	return 0;
}
// Start a game 
void game(){
   
   

	char chessbox[ROW][COL] = {
   
    0 };
	initChess(chessbox);
	printf(" The game begins !\n");
	printChess(chessbox);
	while (1){
   
   
		// The player is down 
		playerMove(chessbox);
		// Print chess and cards 
		printChess(chessbox);
		// Judge the outcome 
		if (isWinner(chessbox) == 'x'){
   
   
			printf(" Congratulations on winning !\n");
			break;
		}
		if (isWinner(chessbox) == 'a'){
   
   
			printf(" You are on the same level as the computer !\n");
			break;
		}
		// Computer move later 
		computerMove(chessbox);
		// Print chess and cards 
		printChess(chessbox);
		// Judge the outcome 
		if (isWinner(chessbox) == 'o'){
   
   
			printf(" unfortunately , You lost !\n");
			break;
		}
		if (isWinner(chessbox) == 'a'){
   
   
			printf(" You are on the same level as the computer !\n");
			break;
		}
	}
}
int menu(){
   
   
	printf("===============\n");
	printf("1. Start the game \n");
	printf("0. End the game \n");
	printf("===============\n");
	int choice;
	printf(" Please enter your choice :");
	scanf("%d", &choice);
	return choice;
}

int main()
{
   
   

ile (1){
   
   
		int choice=menu();
		if (choice == 1){
   
   
			game();
			continue;
		}
		else if (choice == 0){
   
   
			break;
		}else{
   
   
			printf(" Incorrect input , Please re-enter !\n");
			continue;
		}
	}
	system("pause");
	return 0;
}

Running results :