command line hangman game in C

hangman.c

/* I started this hangman game when I was about 3 weeks into Harvard's CS50 course
   I just watched the "week 6" lecture.  I'm very new to programming (about 1 month).
   Anyway I'm really proud of this little command line hangman game. */

#define _XOPEN_SOURCE 500
#define MAXWORDLENGTH 12
#define MINWORDLENGTH 3
#define MAXARRAYLENGTH 12
#define MINTRIES 5

#include <cs50.h>
#include <string.h>
#include <stdio.h>
#include <time.h>
#include <stdlib.h>
#include <unistd.h>
#include <ctype.h>


void clear(void);
void PrintGreetMessage(void);
void fillblank(char *a, char *b);
void swap(char *a, char *b);
void play(char *player1word, char*player2guess, char*undsArray, char*chardumpArray);
void PrintBoard(int casenum);
void printHangmanStand(int numLines);
int readWord(char *buf, int bufSize);


int main(void)
{
  
    char word[MAXARRAYLENGTH];
    char guess[MAXARRAYLENGTH];
    char empty[MAXARRAYLENGTH];
    char abyss[MAXARRAYLENGTH];      
  
  
    PrintGreetMessage();
   
    printf("Word must not contain spaces or numbers\n");
    printf("Word must be lowercase\n\n");
    printf("Please enter a word for player 2 to try and figure out: ");
    fgets(word, 20, stdin);
    
    int alphacheck = 0;
    int n = strlen(word);
    int x = 0;

    do {

        if((isalpha(word[x]) && (n < MAXWORDLENGTH) && (n > MINWORDLENGTH)  && (islower(word[x]))))
        {
            x++;
            if(x == (n - 1))
            {
                alphacheck = 1;
            }
        }

        else
        {
            printf("\n\nPlayer 1, please enter a valid word: ");
            readWord(word, MAXWORDLENGTH);
            alphacheck = 0;
            n = strlen(word);
            x = 0;
        }
    }while(alphacheck == 0);

    clear();

    //initialize these 2 arrays
    int a = 0;
    
    while(a < n)
    {
        empty[a] = '_';
        abyss[a] = '_';
        a++;
    }

    empty[strlen(word) - 1] = '\0';
    abyss[strlen(word) - 1] = '\0';
    guess[strlen(word) - 1] = '\0';
    word[strlen(word) - 1] = '\0';

    play(word, guess, empty, abyss);


printf("\n");

return 0;
}



//Functions!!!!!

void PrintBoard(int casenum)
{
    switch (casenum)
    {
        case 1:
        printf("|\\___\n");
        printHangmanStand(7);
        break;
        
        case 2:
        printf("|\\___\n");
        printf("|   O\n");
        printf("|   |\n");
        printHangmanStand(5);
            break;
        
        case 3:
        printf("|\\___\n");
        printf("|   O\n");
        printf("|  /|\n");
        printHangmanStand(5);
            break;
        
        case 4:
        printf("|\\___\n");
        printf("|   O\n");
        printf("|  /|\\\n");
        printHangmanStand(5);        
            break;  
            
        case 5:
        printf("|\\___\n");
        printf("|   O\n");
        printf("|  /|\\\n");
        printf("|  / \n");
        printHangmanStand(4);       
            break; 
            
        case 6:
        printf("|\\___\n");
        printf("|   O\n");
        printf("|  /|\\\n");
        printf("|  / \\\n");
        printHangmanStand(4);        
            break;
            
        default: 
        printf("Error: switch case not met\n\n");
    }
}

void fillblank(char *a, char *b)
{
    char tmp = *a;
    //*a = *b;
    *b = tmp;
}

void swap(char *a, char *b)
{
    char tmp = *a;
    *a = *b;
    *b = tmp;
}

void printHangmanStand(int numLines) 
{
    while(numLines > 0) 
    {
        printf("|\n");
        numLines --;
    }
}

void clear(void)
{
    printf("\033[2J");
    printf("\033[%d;%dH", 0, 0);
}


void PrintGreetMessage(void)
{
    clear();
    printf("\n\n\nWELCOME TO MARTY'S HANGMAN!!! HEHEHhahaHEhaheHahe\n");
    printf("\n");
    usleep(200000);
}

void play(char *player1word, char*player2guess, char*undsArray, char*chardumpArray)
{

int wordlength = strlen(player1word); 
int RemainingGuesses = 5;
int letterfound = 0;
int timesfound = 0;
int casenum = 1;
char enterpress;
    
        PrintBoard(casenum);
        
        for(int z = 0; z < wordlength; z++)
        {
            printf(" %c ", undsArray[z]);
        }

        for(int i = 0; i < (wordlength * MINTRIES); i++)
        {
            letterfound = 0;
            printf("\n\n");
            printf("Please make a guess: ");
            scanf("%c", &player2guess[i]);
            enterpress = getchar();
            printf("\n\n");



            for(int b = 0; b < wordlength; b++)
            {
                if(player2guess[i] == player1word[b]) 
                {
                    letterfound = 1;
                    fillblank(&player2guess[i], &undsArray[b]);
                    swap(&player1word[b], &chardumpArray[b]);
                    timesfound++;
                    
                }
            }
            
            if(letterfound == 0)
            {
                casenum++;
                printf("\nYou have %i tries left!\n", --RemainingGuesses);
            }

            if(timesfound == wordlength)
            {
                PrintBoard(casenum);
                for(int v = 0; v < wordlength; v++)
                {
                    printf(" %c ", undsArray[v]);
                }
                printf("\n\n   WOW You figured out player 1's word!!!\n\n\n");
                printf("    You win!!!!!!!!\n\n\n");
                break;
            }
            if(RemainingGuesses == 0)
            {
                casenum = 6;
                PrintBoard(casenum);
                printf("\n\n\n YOU LOSE HEHEHEHEHEHEH \n\n");
                break;
            }
            PrintBoard(casenum);
            for(int j = 0; j < wordlength; j++)
            {
                printf(" %c ", undsArray[j]);
            }
        }
}


int readWord(char *buf, int bufSize)
{
    if(fgets(buf, bufSize, stdin) == NULL) 
    {
        return 0;
    }

    return 1;
}

Always open to questions, comments, criticisms. Thanks!

Hey could you explain the function or the sense of the function swap and fill ? I dont get it...sorry if its obvious

Hey @Petros626, wow! been a long time since I looked at this code, I really had to take a look to figure out what the heck I wrote back when I was still learning! :)

It looks like, whenever the player makes a correct guess, the swap function is called to remove a character from the unknown word and swap it with the abyss array, which contains all underscores. So printing _ _ _ _, would then print _ _ X _, or whatever letter they had guessed right. One array is for displaying, the other contains the actual secret word.

Lemme know if that helps!

yes thank you it helped me, together with a teacher of our C tutor :)