I'm getting an incredible error in the for loop in c language. For loop works in 1,2 and 3 but stops suddenly

I know it’s a cliché title but it really is.

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

int chances = 5;         //You can change your chances in there
char sentence[20];      //You can change your sentence's lenght. BUT İF U CHANGE THAT u have change indicator'S lenght
char indicator[20];     //İndicator
char character;         //Variable for your guess 

int woncheck = 0;

void status();          //function
void check();           //function

void main() {

    printf("Wellcome to my hangman game");
    printf("Player 1 please enter your sentence [Max 20 character] ==> ");  
    gets(sentence);         //Get sentence
    
    while (strlen(sentence)>=20)    //Checking for less than 20 char
    {
        printf("Please enter max 20 character ==> ");
        gets(sentence);
    }

    for (int i = 0; i < strlen(sentence); i++) {  // The indicator takes _ as long as the sentence
        if (sentence[i] != ' ') {
            indicator[i] = '_';
        } else {
            indicator[i] = ' ';
        }
    }

    printf("\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n");   //Screen was skipped 

    status(); //Shows sentence's lenght before all of all

    for (int j = 0; j < chances ; j++) //We gave [changes] rights, so we create loops for a [changes] times
    {
        woncheck = 1;   //We need to check the game

        for (int k = 0; k < strlen(sentence); k++) {
            if (indicator[k] == '_') { // if any indicator letter's is not equal to '_' , it is mean, we not won the game yet
                woncheck = 0;
                break;
            }
        }

        if (woncheck == 1) {
            printf("Player 1 won the game\n");
            break;
        }
    
        printf("Player 2 please enter 1 character ==> ");   //Let's gets letter
        scanf(" %c",&character);
        printf("\n");
        chances--;      // -1 Chance
        check();    //Checking
        status();   //Now where we are in status
        
        if (chances == 0) {
            printf("Player 1 lost the game\n");
            break;
        }
    }
}

void status() {
    for (int  i = 0; i < strlen(sentence); i++)     //As long as the sentence...
    {
/*         if (sentence[i]==' ')       //İf yours sentences have space, we give space
           {
           printf(" ");
           }
*/        printf("%c ",indicator[i]);     //We print the indicator equal to the length of the sentence
    }

    printf("You have %d chances left. \n \n",chances);
}

void check() {
    for (int  i = 0; i < strlen(sentence); i++)
    {
        if (toupper(sentence[i]) == toupper(character))     //if any sentece's letter equal to yours letter indicator gets your letter 
        {
            indicator[i] = character;
        }
        
    }
}

It’s basic hangman game.

But if i try enter 3. letter, program is closing

I tryed these code in 2 ide + online compiler but all the time i guess i got logic error.

I request you to try it on your own computer and see if it works.

If it is not working or you found an error, I would appreciate it if you could add it to the comment.

Thanks in advance…

>Solution :

Ignoring the other problems with your code, and addressing only the claimed issue of the game loop ending prematurely, I can see you are counting the "chances" in two conflicting ways.

for (int j = 0; j < chances ; j++)
{
    // (omitted)

    chances--;      // -1 Chance
    check();    //Checking
    status();   //Now where we are in status
    
    if (chances == 0) {
        printf("Player 1 lost the game\n");
        break;
    }
}

You start with a variable chances that is initialized to the value 5, and you construct a for loop using j to loop chances times.

However, in that loop you are also reducing chances by 1 every time before continuing the loop. That means your variable states when testing

• after the first iteration, chances is 4
• after the second iteration, chances is 3
• after the third iteration, chances is 2 and this now fails the continuation condition.

You should choose only one approach. Either track the game progress with j only and do not modify chances, or only use chances as follows:

while (chances > 0)
{
    // (omitted)

    chances--;      // -1 Chance
    check();    //Checking
    status();   //Now where we are in status
}

if (woncheck) {
    printf("Player 1 won the game\n");
} else {
    printf("Player 1 lost the game\n");
}