Magic Number

Magic Number Game in C programming

#include <stdio.h>  // Header starter.
#include <stdlib.h> // for system ("cls");
#include <cstdio>   // for fflush(stdin); clear the scanf.

void border()
{
    printf("\n\n\t    <===================================>\n");
}
void magicnumbertext()
{
    printf("\n\t   $$   $$  $$$$$$  $$$$$$  $$$$$$  $$$$$$");
    printf("\n\t   $ $ $ $  $$  $$  $$        $$    $$    ");
    printf("\n\t   $  $  $  $$$$$$  $$ $$$    $$    $$    ");
    printf("\n\t   $     $  $$  $$  $$  $$    $$    $$    ");
    printf("\n\t   $     $  $$  $$  $$$$$$  $$$$$$  $$$$$$");
    printf("\n");
    printf("\n\t     $   $  $  $  $   $  $$$   $$$  $$$ ");
    printf("\n\t     $$  $  $  $  $$ $$  $  $  $    $  $");
    printf("\n\t     $ $ $  $  $  $ $ $  $$$   $$$  $$$ ");
    printf("\n\t     $  $$  $  $  $   $  $  $  $    $ $ ");
    printf("\n\t     $   $  $$$$  $   $  $$$   $$$  $  $");
    printf("\n");
}
void logo()
{
  printf("\n\t\t          @@@@@@@  ");
  printf("\n\t\t         @   @   @ ");
  printf("\n\t\t             @   @ ");
  printf("\n\t\t         @   @   @ ");
  printf("\n\t\t          @@@  @@  ");
  printf("\n");
}

int findCount(int n)
{
    int count = 0;
    while (n != 0)
    {
        count++;
        n /= 10;
    }
    return count;
}

int main()
{
    start:
    system("cls");
    int num = 0, ques = 0, rep = 0, rep2 = 0, rep3 = 0;
    int space = 0, space2 = 0, rep_ans = 0, column = 0, inp_num = 0;
    int geoseq = 1, last_num = 1;
    char input, enter;

    fflush(stdin);
    border();
    printf("\n\n\tBefore you start, let's set this up.\n ");
    printf("\n\tPick a number from 1 to...?\n ");
    printf("\n\t(Warning: The more number you input, the more \n\t about how many times you answer by yes or no.)\n");
    printf("\n\t(Example: Your input is 30, so you need to \n\t answer 5 times by yes or no.)\n");
    printf("\n\t(If you don't know, just input 0,1 or any letter)\n");
    border();
    printf("\n\tInput: ");
    scanf("%d", &inp_num);
    for (rep = 0; last_num <= inp_num; rep++)
    {
        last_num *= 2;
        ++rep_ans;
    }
    last_num -= 1;
    fflush(stdin);
    if (inp_num > 1)
    {
        printf("\n\t> If you want to choose from 1 to %d, input 'y'.", inp_num);
        if (inp_num != last_num)
        {
            printf("\n\t> If you want to extend from 1 to %d, input 'e'.", last_num);
        }
        printf("\n\t> If you want to change, input 'c' or any.");
        border();
        printf("\n\tInput: ");
        scanf("%c", &input);
        if (input == 'y')
        {
            last_num = inp_num;
        }
        else if (input != 'y' && input != 'e')
        {
            goto start;
        }
    }

    system("cls");
    fflush(stdin);
    border();
    if (inp_num <= 1)
    {
        printf("\n\tAlright, I'll automatically choose from default. \n");
        last_num = 31;
        rep_ans = 5;
    }
    printf("\n\t\t\tWelcome to\n");
    magicnumbertext();
    printf("\n\t\t     Made by Dalmanski\n");
    logo();
    printf("\n\t\t  Press Enter to Continue.");
    border();
    fflush(stdin);
    scanf("%c", &enter);
    system("cls");
    border();
    printf("\n\t(Pick any number on your mind between 1 to %d.)\n", last_num);
    printf("\n\tIf your done, \n\tPress Enter to Continue.");
    printf("\n\t(Don't input your number)");
    border();
    fflush(stdin);
    scanf("%c", &enter);

    do
    {
        system("cls");
        fflush(stdin);
        border();
        if (enter != '\n' && ques == 0)
        {
            printf("\n\t       I told you to press Enter. \n ");
            printf("\n\t     Anyway... \n ");
        }
        ++ques;
        rep2 = geoseq;
        rep3 = 0;
        column = 0;
        if (input != 'y' && input != 'n' && ques != 1)
        {
            printf("\n\t       Your input is not yes or no so");
            printf("\n\t     I'll automatically say no to that.");
            printf("\n\n\t  If my automatically no is not your answer,");
            printf("\n\t   type 'try again' or type 'yes' next time.\n");
        }
        if (ques == 1)
        {
            printf("\n\t     You need to answer %d times. \n", rep_ans);
        }
        printf("\n\t     %d/%d) Find your number.\n", ques, rep_ans);
        while (rep3 <= (last_num + 1) / 2 && rep2 <= last_num)
        {
            for (rep = 0; rep < geoseq && rep2 <= last_num; rep++)
            {
                if (column == 0)
                {
                    printf("\n");
                    for (space2 = 0; space2 < 17 - findCount(last_num); space2++)
                    {
                        printf(" ");
                    }
                }
                for (space = 0; space < findCount(last_num) - findCount(rep2); space++)
                {
                    printf(" ");
                }
                printf("%d ", rep2);
                rep2++;
                rep3++;
                column++;
                if (column == 4 && last_num < 50 || column == 11 - findCount(last_num))
                {
                    column = 0;
                }
            }
            rep2 += geoseq;
        }
        printf("\n\n\t     Is your number here? yes or no? ");
        border();
        printf("\n\t    Input: ");
        scanf("%c", &input);

        if (input == 'y')
        {
            num += geoseq;
        }
        else if (input == 't')
        {
            goto start;
        }
        geoseq *= 2;
        printf("\n\t ");
    } while (ques < rep_ans);

    system("cls");
    border();
    if (num != 0)
    {
        if (num <= last_num)
        {
            printf("\n\n\t\t     Your number is\n");
            printf("\n\t\t\t   %d\n", num);
            printf("\n\t\t       Thank you! \n");
            printf("\n\n\t      If this number is not your number,");
            printf("\n\t       make sure you check it properly.");
            printf("\n\t   I checked it and it got my number right. \n");
            printf("\n\t\t Press Enter to Try Again.");
        }
        else
        {
            printf("\n\n\t\t  Your number is beyond %d \n", last_num);
            printf("\t        but the number is not there. \n");
            printf("\n\t\t\tTry again. \n");
            printf("\n\t\t Press Enter to Try Again.\n");
        }
    }
    else
    {
        printf("\n\n\t\tYour number is not in 1 to %d. \n", last_num);
        printf("\n\t\t\t Try again. \n");
        printf("\n\t\t  Press Enter to Try Again.\n");
    }
    border();
    fflush(stdin);
    scanf("%c", &enter);
    goto start;
}
// Released in January,28,2023.
// Update:
// 01/28/23:
// > New interaction that automatically chooses a number from 1 to 31 if your input is 0 or a letter.
// > If you do not press enter after the introduction, it will say "I told you to press Enter."
// > If your answer is not 'yes' or 'no,' it will automatically be interpreted as 'no'.
// > You can try again by inputting 't' while answering yes or no.
// 01/29/23:
// > Reformatted, correcting grammatical errors and adjusting tabs.
// > Added a function to determine the number of digits.
// > Replaced the use of \t with a for loop for adding spacing based on the number of digits in the last number.
// > Changed the introduction set-up from repeating yes or no to choosing a number from 1 to...?
// 01/30/23:
// > Reformatted, Like changing "rep2 = geoseq + rep2" to "rep2 += geoseq."
// > Adjusted the column of the number generation based on the number of digits in the last number.
// > Added a header #include<cstdio> for fflush(stdin), which only works on C compilers like DevC++ and CxxDroid. Other C compilers, especially online C compilers, may not work.
// 01/31/23:
// > Added a system to ask if you would like to extend the range or change it. For example, if you input 28, it will ask if you want to extend it to 1 to 31 or keep it 1 to 28 or change it.
// > Added an end text if your answer to 'yes' or 'no' is not found on the number, then the number detected is above the current number.
// > Adjusted the 4 columns again for numbers 31 and below.

// Some updates have not been announced yet. You can view my revisions on Github Gist.

You need Devc++ for PC and Cxxdroid for Android to run. Idk if other c compiler work.