Thread: Random number guessing game

I'm on my way to make a Hang Man game so I thought I'd develop a random number guessing game first.

Here's the code:

Code:

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


int main() {
    int RandomNumber, Guess;
    time_t RandomSeeder;
    
    srand((unsigned) time(&RandomSeeder));
    
    RandomNumber = rand() % 100;
    
    printf("Enter a guess, please: ");
    
    scanf("%d", &Guess);
    
    while(Guess > RandomNumber || Guess < RandomNumber) {
        if(Guess > RandomNumber)
            printf("Too high!\n");
        
        if(Guess < RandomNumber)
            printf("Too low!\n");
        
        printf("Try again: ");
        
        scanf("%d", &Guess);
    }
    
    if(Guess == RandomNumber)
        printf("You win!\n");
    
    return 0;
}

I know I'm using scanf but this was a quick throw together.

I've forgotten how to use other methods to make sure a user inputs a number instead of a character. I'll be looking into that in a bit...so yes, there's a feature where if you type a few characters, it'll go into an infinite loop.

I've done a bit more work. This time I can accept characters (except for the looper variable, haven't done that yet). My goal is to just reject anything that's not a number. I'll get there.

Here's the new code:

Code:

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


int Guess;
char UserGuess[64];


void NumberInput(void);


int main() {
    int looper;
    looper = 1;
    
    while(looper) {
        int RandomNumber;
        time_t RandomSeeder;
        
        srand((unsigned) time(&RandomSeeder));
        
        RandomNumber = rand() % 100;
        
        printf("Number guess: ");
        
        NumberInput();
        
        while(Guess > RandomNumber || Guess < RandomNumber) {
            if(Guess > RandomNumber)
                printf("Too high!\n");
            
            else
                printf("Too low!\n");
            
            printf("Try again: ");
            
            NumberInput();
        }
        
        if(Guess == RandomNumber)
            printf("You win!\n");
        
        printf("Play another game?\n");
        printf("1. yes, 2. no\n");
        
        scanf("%d", &looper);
        
        if(looper == 2)
            looper = 0;
    }
    return 0;
}


void NumberInput() {
    while(1) {
        fgets(UserGuess, 64, stdin);
        
        Guess = atoi(UserGuess);
        
            if(Guess > -1 && Guess < 101)
            break;
        
        else
            printf("Enter a number between 0 to 100\n");
    }
    return;
}

Are you able to tell me some of the functions used in your function without giving away how it works?

is uses isdigit and a char if more than 1 , like 20 = 2 then char is looked at as an array within isdigit. to get it back to 1 to see char as an int. it is a stinky tricky thing to try and get to work. I still have issues with it. I know me and whiteflags fiddled with this issue about how to get input to see if it is a digit or not a while back, It might be in C++ side. if not here, ok found it, YOU DO NOT HAVE TO CLICK ON IT, RESIST THE TEMPTATION Mhumhahahahahaha

help with a function that determins digit or not digit needed, apply within.