Project 4: Number Guessing Game

Project 4: Number Guessing Game

You now have the pieces to build your first real game: the computer picks a secret number, and you try to find it with hints.

The goal

Generate a random number between 1 and 100, ask the user to guess, print Too high or Too low, and count attempts until the guess matches.

What you practice

• Random numbers with mt19937 and uniform_int_distribution
• A while loop that keeps the game going
• if / else if for the high and low hints
• continue to skip a bad guess
• Counting attempts

Starter code

Start from this compile-able program:

#include <iostream>
#include <random>
using namespace std;

int main() {
  random_device rd;
  mt19937 gen(rd());
  uniform_int_distribution<int> draw(1, 100);
  int secret = draw(gen);
  cout << "I picked a number from 1 to 100." << endl;
  return 0;
}

Step-by-step

1. Declare int guess = 0; and int attempts = 0;.
2. Loop with while (guess != secret).
3. Inside the loop ask cout << "Your guess: "; cin >> guess;.
4. Reject out-of-range input: if guess < 1 || guess > 100, print Out of range. and continue;.
5. Only after that, attempts++;.
6. Add hints: if (guess > secret) print Too high., else if (guess < secret) print Too low..
7. After the loop print "You got it in " << attempts << " tries.".

Checklist

• [ ] mt19937 generates the random stream
• [ ] uniform_int_distribution<int>(1, 100) picks the secret
• [ ] The while loop runs until the guess matches
• [ ] Out-of-range guesses are skipped with continue
• [ ] Attempts only count for valid guesses
• [ ] Hints tell the player too high or too low

TL;DR

• mt19937 gen(rd()) creates a random generator.
• A while loop keeps running until the condition turns false.
• continue jumps back to the top of the loop.
• Count valid attempts, not rejected ones.