Project 2: Number Guessing Game with High Score Tracking

Beginner14 min read•Updated: 2026-10-22

🎲 Capstone Project 2: Number Guessing Game with High Score Tracking

Introduction

Interactive games teach core control flow, loop mechanics, dynamic feedback, and session metrics. In this project, you will build a Number Guessing Game that tracks the player's fewest guesses as a persistent high score.

🎯 Architecture

Random number generation using <random> (the modern C++ replacement for legacy rand()).
Feedback hints: "Too High", "Too Low", or "Congratulations!".
Tracks attempts and retains the record session high score.

💻 Full Source Code

1#include <iostream>
2#include <random>
3#include <limits>
4 
5int main() {
  // Modern C++ Mersenne Twister random engine
  std::random_device rd;
  std::mt19937 generator(rd());
  std::uniform_int_distribution<int> distribution(1, 100);
10 
  int bestScore = std::numeric_limits<int>::max();
  char playAgain = 'n';
13 
  std::cout << "========================================\n";
  std::cout << "   MSK Institute C++ Guessing Game      \n";
  std::cout << "========================================\n";
17 
  do {
      int secretNumber = distribution(generator);
      int attempts = 0;
      int guess = 0;
      bool guessed = false;
23 
      std::cout << "\nI have picked a secret number between 1 and 100.\n";
25 
      while (!guessed) {
          std::cout << "Enter your guess: ";
          if (!(std::cin >> guess)) {
              std::cout << "[ERROR]: Enter a valid number!\n";
              std::cin.clear();
              std::cin.ignore(std::numeric_limits<std::streamsize>::max(), '\n');
              continue;
          }
34 
          ++attempts;
36 
          if (guess < secretNumber) {
              std::cout << "📉 Too Low! Try a higher number.\n";
          } else if (guess > secretNumber) {
              std::cout << "📈 Too High! Try a lower number.\n";
          } else {
              std::cout << "🎉 Correct! You found the number in " << attempts << " attempts!\n";
              guessed = true;
44 
              if (attempts < bestScore) {
                  bestScore = attempts;
                  std::cout << "🌟 NEW RECORD! Best score: " << bestScore << " attempts!\n";
              } else {
                  std::cout << "Best Score so far: " << bestScore << " attempts.\n";
              }
          }
      }
53 
      std::cout << "\nPlay another round? (y/n): ";
      std::cin >> playAgain;
56 
  } while (playAgain == 'y' || playAgain == 'Y');
58 
  std::cout << "\nThanks for playing! Final High Score: " 
            << (bestScore == std::numeric_limits<int>::max() ? 0 : bestScore) << " attempts.\n";
61 
  return 0;
63}

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Project 1: Scientific Calculator with Memory Registers	Project 3: Student Grade Report & GPA Calculator

Practice Quiz

Test your understanding of this lesson with 1 questions. Each question has one correct answer.

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💻 Full Source Code

1#include <iostream>
2#include <random>
3#include <limits>
4 
5int main() {
  // Modern C++ Mersenne Twister random engine
  std::random_device rd;
  std::mt19937 generator(rd());
  std::uniform_int_distribution<int> distribution(1, 100);
10 
  int bestScore = std::numeric_limits<int>::max();
  char playAgain = 'n';
13 
  std::cout << "========================================\n";
  std::cout << "   MSK Institute C++ Guessing Game      \n";
  std::cout << "========================================\n";
17 
  do {
      int secretNumber = distribution(generator);
      int attempts = 0;
      int guess = 0;
      bool guessed = false;
23 
      std::cout << "\nI have picked a secret number between 1 and 100.\n";
25 
      while (!guessed) {
          std::cout << "Enter your guess: ";
          if (!(std::cin >> guess)) {
              std::cout << "[ERROR]: Enter a valid number!\n";
              std::cin.clear();
              std::cin.ignore(std::numeric_limits<std::streamsize>::max(), '\n');
              continue;
          }
34 
          ++attempts;
36 
          if (guess < secretNumber) {
              std::cout << "📉 Too Low! Try a higher number.\n";
          } else if (guess > secretNumber) {
              std::cout << "📈 Too High! Try a lower number.\n";
          } else {
              std::cout << "🎉 Correct! You found the number in " << attempts << " attempts!\n";
              guessed = true;
44 
              if (attempts < bestScore) {
                  bestScore = attempts;
                  std::cout << "🌟 NEW RECORD! Best score: " << bestScore << " attempts!\n";
              } else {
                  std::cout << "Best Score so far: " << bestScore << " attempts.\n";
              }
          }
      }
53 
      std::cout << "\nPlay another round? (y/n): ";
      std::cin >> playAgain;
56 
  } while (playAgain == 'y' || playAgain == 'Y');
58 
  std::cout << "\nThanks for playing! Final High Score: " 
            << (bestScore == std::numeric_limits<int>::max() ? 0 : bestScore) << " attempts.\n";
61 
  return 0;
63}

Previous Lesson

Next Lesson

Project 1: Scientific Calculator with Memory Registers

Project 3: Student Grade Report & GPA Calculator