Random Number Memory Game in C

Last Updated : 15 Jul, 2025

In this article, will design a simple number memory game in the C programming language. It is a simple memory number game where a random number is displayed and is hidden after some time. The task is to guess that displayed number to continue the game.

How to Play This Game:

Press 1 on your keyboard to start the game.
A random positive number is displayed in the console which the player has to remember.
After few seconds the number displayed will disappear.
At the next line in the console, the player has to input the number shown previously.
If the input number is the same as the previous number then the player's score increases by 1 and the game continue.
If the input number is incorrect, the game ends and the player's score is displayed.

Below is the implementation of the above approach:

// C program to implements the above
// memory game
#include <conio.h>
#include <dos.h>
#include <stdio.h>
#include <stdlib.h>

// Function to generate the random
// number at each new level
int randomnum(long level)
{
    clrscr();
    printf("Level %ld \n", level);

    long num;
    num = (rand() % 100 * level)
          + 1 + level * 5.2f;

    printf("Number : %ld \n", num);
    delay(2000 - (10 * level));
    clrscr();

    // Return the number
    return num;
}

// Driver Code
void main()
{
    clrscr();
    long num;
    long guessnum;

    long level = 1;

    long inputnum;

    // Start the game
    printf("Press 1 to start Game! ");
    scanf("%ld", &inputnum);

    // Game Starts
    if (inputnum == 1) {

        // Iterate until game ends
        do {

            // Generate a random number
            num = randomnum(level);

            // Get the guessed number
            scanf("%ld", &guessnum);
            level++;

            // Condition for the Game
            // Over State
            if (guessnum != num) {
                printf("You Failed! ");
            }
        } while (num == guessnum);
    }

    getch();
}