Hangman Game in C Programming

hangman.c

/**
* @autor Saroj Tripathi
* @name Hangman
* https://www.onlinegdb.com/online_c_compiler . Just copy this source code and test it on this online compiler.
*/

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

#define WORDS 10
#define WORDLEN 40
#define CHANCE 6

bool srand_called = false;

int i_rnd(int i) {
    if (!srand_called) {
        srand(time(NULL) << 10);
        srand_called = true;
    }
    return rand() % i;
}

char* decrypt(char* code) {
	int hash = ((strlen(code) - 3) / 3) + 2;
	char* decrypt = malloc(hash);
	char* toFree = decrypt;
	char* word = code;
	for (int ch = *code; ch != '\0'; ch = *(++code))
	{
		if((code - word + 2) % 3  == 1){
			*(decrypt++) = ch - (word - code + 1) - hash;
		}
	}
	*decrypt = '\0';
	return toFree;
}

void printBody(int mistakes, char* body) {
	printf("\tMistakes :%d\n", mistakes);
	switch(mistakes) {

		case 6: body[6] = '\\'; break;
		case 5: body[5] = '/'; break;
		case 4: body[4] = '\\'; break;
		case 3: body[3] = '|'; break;
		case 2: body[2] = '/'; break;
		case 1: body[1] = ')', body[0] = '('; break;
		default: break;

	}

	printf("\t _________\n"
	       "\t|         |\n"
	       "\t|        %c %c\n"
	       "\t|        %c%c%c\n"
	       "\t|        %c %c\n"
	       "\t|             \n"
	       "\t|             ", body[0], body[1], body[2],
	       body[3], body[4], body[5], body[6]);
}

void printWord(char* guess, int len) {
	printf("\t");
	for (int i = 0; i < len; ++i)
	{
		printf("%c ", guess[i]);
	}
	printf("\n\n");
}

int main() {

	printf("\n\t Be aware you can be hanged!!.");

	printf("\n\n\t Rules : ");
	printf("\n\t - Maximum 6 mistakes are allowed.");
	printf("\n\t - All alphabet are in lower case.");
	printf("\n\t - All words are name of very popular Websites. eg. Google");
	printf("\n\t - If you enjoy continue, otherwise close it.");

	printf("\n\t Syntax : Alphabet");
	printf("\n\t Example : a \n\n");

	char values[WORDS][WORDLEN] = {"N~mqOlJ^tZletXodeYgs","gCnDIfFQe^CdP^^B{hZpeLA^hv","7urtrtwQv{dt`>^}FaR]i]XUug^GI",
									"aSwfXsxOsWAlXScVQmjAWJG","cruD=idduvUdr=gmcauCmg]","BQt`zncypFVjvIaTl]u=_?Aa}F",
									"iLvkKdT`yu~mWj[^gcO|","jSiLyzJ=vPmnv^`N]^>ViAC^z_","xo|RqqhO|nNstjmzfiuoiFfhwtdh~",
									"OHkttvxdp|[nnW]Drgaomdq"};
	char *body = malloc(CHANCE+1);

	int id = i_rnd(WORDS);
	char *word = decrypt(values[id]);
	int len = strlen(word);
	char *guessed = malloc(len);
	char falseWord[CHANCE];

	memset(body, ' ', CHANCE+1);
	memset(guessed, '_', len);
	char guess;
	bool found;
	char* win;

	int mistakes = 0;
	setvbuf(stdin, NULL, _IONBF, 0);

	do {

		found = false;
		printf("\n\n");
		printBody(mistakes, body);
		printf("\n\n");
		printf("\tFalse Letters : ");
		if(mistakes == 0) printf("None\n");
		for (int i = 0; i < mistakes; ++i)
		{
			printf("%c", falseWord[i]);
		}
		printf("\n\n");
		printWord(guessed, len);
		printf("\tGive me a alphabet in lower case : ");
		do {scanf("%c",&guess);} while ( getchar() != '\n' );
		for (int i = 0; i < len; ++i)
		{
			if(word[i] == guess) {
				found = true;
				guessed[i] = guess;
			}	
		}
		if(!found) {
			falseWord[mistakes] = guess;
			mistakes += 1;
		}
		win = strchr(guessed, '_');
	}while(mistakes < CHANCE && win != NULL);

	if(win == NULL) {
		printf("\n");
		printWord(guessed, len);
		printf("\n\tCongrats! You have won : %s\n\n", word);
	} else {
		printf("\n");
		printBody(mistakes, body);
		printf("\n\n\tBetter try next time. Word was %s\n\n", word);
	}

	free(body);
	free(word);
	free(guessed);
	return EXIT_SUCCESS;
}

I just wanted to ask which encryption application did you use for the words?

I just wanted to ask which encryption application did you use for the words?

Hi NeroKode, its simply a polyalphabetic substitution cipher algorithm, that shifts the word to some dynamic value. It also packs random hash between the real cipher letter to make it more secure. This is not trust worthy for IT security purposes. Furthermore my encryption code can be found here : https://github.com/dhpradeep/100DaysCodeChallenge/blob/saroj/challenges/day04/encryptDecrypt.c

In lines 141 and 142 seems to have a problem for me because the code cannot execute for me.

i tried executing it in vs code but it gives me many errors. can someone help me with it

char values[WORDS][WORDLEN] = {"NmqOlJ^tZletXodeYgs","gCnDIfFQe^CdP^^B{hZpeLA^hv","7urtrtwQv{dt>^}FaR]i]XUug^GI", "aSwfXsxOsWAlXScVQmjAWJG","cruD=idduvUdr=gmcauCmg]","BQtzncypFVjvIaTl]u=?Aa}F",
"iLvkKdTyu~mWj[^gcO|","jSiLyzJ=vPmnv^N]^>ViAC^z","xo|RqqhO|nNstjmzfiuoiFfhwtdh",
"OHkttvxdp|[nnW]Drgaomdq"};
What is this???
pls help!!!!

i tried executing it in vs code but it gives me many errors. can someone help me with it

Hi soul-warrior1692 can I get more information about the error message you are getting. The code is checked and runs well. You can quickly try it here : https://www.onlinegdb.com/online_c_compiler . Just copy the source code and test it on this online compiler.

char values[WORDS][WORDLEN] = {"NmqOlJ^tZletXodeYgs","gCnDIfFQe^CdP^^B{hZpeLA^hv","7urtrtwQv{dt>^}FaR]i]XUug^GI", "aSwfXsxOsWAlXScVQmjAWJG","cruD=idduvUdr=gmcauCmg]","BQtzncypFVjvIaTl]u=?Aa}F", "iLvkKdTyu~mWj[^gcO|","jSiLyzJ=vPmnv^N]^>ViAC^z","xo|RqqhO|nNstjmzfiuoiFfhwtdh",
"OHkttvxdp|[nnW]Drgaomdq"};
What is this???
pls help!!!!

Hi soul-warrior1692, they are the encrypted names of websites. These are websites what the user has to guess during the game. To hide it ( yes there is no DB integrated to get data ) from end user, the name of websites are encrypted using a function from this https://github.com/dhpradeep/100DaysCodeChallenge/blob/saroj/challenges/day04/encryptDecrypt.c project and can be decrypted using the function in the source code that is : decrypt(char* code).

In lines 141 and 142 seems to have a problem for me because the code cannot execute for me.

Hi 1-2cloud, can i get errors you are receiving. Cuz the code is working for me, in Linux and Windows with C99 / C11 Standard.

thx for the reply on my email, just wanted to know one more thing, how will I get to know which encryption is for which website name, as I want to remove some from my code?

thx for the reply on my email, just wanted to know one more thing, how will I get to know which encryption is for which website name, as I want to remove some from my code?

You can use the decrypt function from the source code.

I have written a small program to show you the example. Run it in online complier example https://www.onlinegdb.com/online_c_compiler or in your IDE to get the values listed. The program is :

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

#define WORDS 10
#define WORDLEN 40

char* decrypt(char* code) {
	int hash = ((strlen(code) - 3) / 3) + 2;
	char* decrypt = malloc(hash);
	char* toFree = decrypt;
	char* word = code;
	for (int ch = *code; ch != '\0'; ch = *(++code))
	{
		if((code - word + 2) % 3  == 1){
			*(decrypt++) = ch - (word - code + 1) - hash;
		}
	}
	*decrypt = '\0';
	return toFree;
}

int main()
{
    char values[WORDS][WORDLEN] = {"N~mqOlJ^tZletXodeYgs","gCnDIfFQe^CdP^^B{hZpeLA^hv","7urtrtwQv{dt`>^}FaR]i]XUug^GI",
									"aSwfXsxOsWAlXScVQmjAWJG","cruD=idduvUdr=gmcauCmg]","BQt`zncypFVjvIaTl]u=_?Aa}F",
									"iLvkKdT`yu~mWj[^gcO|","jSiLyzJ=vPmnv^`N]^>ViAC^z_","xo|RqqhO|nNstjmzfiuoiFfhwtdh~",
									"OHkttvxdp|[nnW]Drgaomdq"};
	char *word;
    for(int i = 0; i < WORDS; ++i) {
        word = decrypt(values[i]);
        printf("Decrypted word ( Index %d ) : %s \n", i, word);
    }
    free(word);
    return 0;
}

thank you so much. Great work sir. you r really very helpful😀

can you please explain this part of the code to me in brief?
bool srand_called = false;

int i_rnd(int i) {
if (!srand_called) {
srand(time(NULL) << 10);
srand_called = true;
}
return rand() % i;
}

char* decrypt(char* code) {
int hash = ((strlen(code) - 3) / 3) + 2;
char* decrypt = malloc(hash);//malloc is memory allocation. hash stores data.
char* toFree = decrypt;
char* word = code;
for (int ch = *code; ch != '\0'; ch = *(++code))
{
if((code - word + 2) % 3 == 1){
*(decrypt++) = ch - (word - code + 1) - hash;
}
}
*decrypt = '\0';
return toFree;
}

Can you write a code that creates a chatbot for us using C++

The code works fine in code blocks but not in visual studio code or in Dev C++. <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=icon> Virus-free. www.avast.com <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=link> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>

…

On Tue, 1 Jun 2021 at 07:21, soul-warrior1692 ***@***.***> wrote: ***@***.**** commented on this gist. ------------------------------ thx for the reply on my email, just wanted to know one more thing, how will I get to know which encryption is for which website name, as I want to remove some from my code? — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <https://gist.github.com/aa2f0849f33736395544c2d341ab3722#gistcomment-3764827>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AUCXN4TFMURXCSOK4P3CD43TQS7DRANCNFSM4UAKXZLQ> .

Im using Dev c and im getting an error on line 31 when trying to compile

Code works just fine in vs code, thanks for making my life A LOT easier at uni :>>