init push

README.md

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+# TicTacToe in C
+
+A simple TicTacToe game written in C in under 2 hours!
+
+## Usage
+```bash
+./build
+```
+then 
+```bash
+./ttt
+```
+
+Enjoy!

build.sh

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+ #!/bin/bash
+
+set -xe
+CFLAGS="-Wall -Werror -std=c11 -ggdb"
+
+gcc $CFLAGS -o ttt main.c

main.c

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+#include <stdio.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <time.h>
+
+#define ROWS 3
+#define COLUMNS 3
+#define RED         "\033[31m"      /* Red */
+#define BOLDGREEN   "\033[1m\033[32m"      /* Bold Green */
+#define BOLDYELLOW  "\033[1m\033[33m"      /* Bold Yellow */
+#define BOLDRED     "\033[1m\033[31m"      /* Bold Yellow */
+#define BOLDWHITE   "\033[1m\033[37m"      /* Bold White */
+#define BOLDMAGENTA "\033[1m\033[35m"      /* Bold Magenta */
+#define RESET       "\033[0m"
+
+char board[ROWS][COLUMNS];
+char ESC = 27;
+
+void print_board();
+void clear_board();
+void player_choice(char player);
+void cpu_choice(char cpu);
+char check_win();
+int free_spaces();
+
+int main(int argc, char *argv[]){
+    char flag = ' ';
+    clear_board();
+
+    do{
+        flag = check_win();
+        if(free_spaces() == 0){
+            break;
+        }
+
+        print_board();
+
+        player_choice('X');
+        flag = check_win();
+        print_board();
+
+        player_choice('O');
+        flag = check_win();
+        print_board();
+
+    } while(flag == ' ');
+
+    if(flag == ' ') 
+        printf(BOLDMAGENTA "\nNo-one won!" RESET);
+    else
+        printf(BOLDMAGENTA "\n%c won!" RESET, flag );
+
+    printf(BOLDWHITE "\nGame Over!\n" RESET);
+	return 0;
+}
+
+void print_board(){
+    system("clear");
+    printf(BOLDWHITE "  1   2   3 \n" RESET);
+
+    printf(BOLDWHITE "1 " RESET);
+    printf("%c | %c | %c ", board[0][0], board[0][1], board[0][2]);
+    printf("\n ---|---|---\n");
+
+    printf(BOLDWHITE "2 " RESET);
+    printf("%c | %c | %c ", board[1][0], board[1][1], board[1][2]);
+    printf("\n ---|---|---\n");
+
+    printf(BOLDWHITE "3 " RESET);
+    printf("%c | %c | %c ", board[2][0], board[2][1], board[2][2]);
+
+    printf("\n");
+}
+
+void clear_board(){
+    int r, c;
+    for(r = 0; r < ROWS; ++r){
+        for(c = 0; c < COLUMNS; ++c){
+            board[r][c] = ' ';
+        }
+    }
+}
+
+int free_spaces(){
+    int r, c, s;
+    s = 0;
+    for(r = 0; r < ROWS; ++r){
+        for(c = 0; c < COLUMNS; ++c){
+            if(board[r][c] == ' ') ++s;
+        }
+    }
+    return s;
+}
+
+void player_choice(char player){
+
+    int pr, pc;
+    printf(BOLDGREEN "\n[%c] Enter row (1, 2 or 3) <---->\n> " RESET, player);
+    scanf("%d", &pr);
+    --pr;
+
+    printf(BOLDYELLOW "\n[%c] Enter column (1, 2 or 3) ^ v\n> " RESET, player);
+    scanf("%d", &pc);
+    --pc; 
+
+    if(board[pr][pc] != ' ' ){
+       printf(BOLDRED "\n[%c] Cannot play here, skipping...\n" RESET, player);
+    } else {
+       board[pr][pc] = player;
+    }
+}
+
+void cpu_choice(char cpu){
+    time_t t;
+    srand((unsigned)time(&t));
+
+    int cr, cc;
+    cr = cc = 0;
+    while(board[cr][cc] != ' '){
+        cr = rand() % 3;
+        cc = rand() % 3;
+    }
+    board[cr][cc] = cpu;
+}
+
+char check_win(){
+    char flag = ' ';
+    /*
+    00 |01 |02
+    ---|---|---
+    10 |11 |12
+    ---|---|---
+    20 |21 |22
+    */
+    //horizontal checks l to r
+    if(board[0][0] == board[0][1] && board[0][1] == board[0][2]){
+        flag = board[0][0];
+    }
+    if(board[1][0] == board[1][1] && board[1][1] == board[1][2]){
+        flag = board[1][0];
+    }
+    if(board[2][0] == board[2][1] && board[2][1] == board[2][2]){
+        flag = board[2][0];
+    }
+
+    //horizontal check up n down
+    if(board[0][0] == board[1][0] && board[1][0] == board[2][0]){
+        flag = board[0][0];
+    }
+    if(board[0][1] == board[1][1] && board[1][1] == board[2][1]){
+        flag = board[0][1];
+    }
+    if(board[0][2] == board[1][2] && board[1][2] == board[2][2]){
+        flag = board[0][2];
+    }
+
+    //diagonal checks
+    if(board[0][0] == board[1][1] && board[1][1] == board[2][2]){
+        flag = board[0][0];
+    } 
+    if(board[0][2] == board[1][1] && board[1][1] == board[2][0]){
+        flag = board[0][2];
+    }
+
+    return flag;
+}