This code is a simple "Guess the Number" game written in C++. Here's a breakdown of its functionality:
Compilation and Execution:
To compile the code, the command is: g++ jogoadvinha.cpp -o jogoadvinha.out To run the compiled program: ./jogoadvinha.out Every time changes are made to the code, it must be recompiled before running again. Includes and Libraries:
#include : Allows input and output operations (e.g., using cin for input and cout for output). #include : Contains functions for generating random numbers (like rand() and srand()). #include : Used to seed the random number generator with the current time. using namespace std;: Allows the use of standard functions like cout without the need for std:: prefix. Main Program:
The program begins by printing a welcome message to the user. The user is asked to choose a difficulty level: Easy ('E'), Medium ('M'), or Difficult ('D'). Based on this choice, the number of allowed attempts (numOfTry) is set to 15, 10, or 5, respectively. Random Secret Number:
A secret number between 0 and 99 is generated using rand() % 100. The random number generator is seeded with the current time using srand(time(NULL)), which ensures a different number is generated in each run of the game. Gameplay:
The player is prompted to guess the secret number within the allowed number of attempts. For each guess, the program calculates how close the guess is to the secret number and subtracts points based on the difference. If the guess is too high or too low, the program provides feedback to the player. If the player guesses the correct number, they win the game, and the program displays the number of attempts taken and their remaining points. Scoring:
The player starts with 1000 points, and points are deducted based on the difference between the guess and the secret number. The formula used for point deduction is: abs(guess - secret_num) / 2.0. The program uses cout.precision(2) to format the points with two decimal places and fixed to prevent scientific notation. End of Game:
If the player guesses correctly, the game ends with a victory message. If all attempts are used without guessing correctly, the game reveals the secret number and ends. This code demonstrates core C++ concepts such as conditionals, loops, user input/output, and basic random number generation.
Modularity: The code is broken down into reusable functions (print_welcome_message, select_difficulty, set_attempts, set_secret_num, get_valid_guess, calculate_points_lost, play_game, and play_again), making it easier to read and maintain.
Input Validation: The get_valid_guess() function ensures that users input valid integers, preventing the program from crashing on invalid input.
Replay Option: After a game ends, the player is asked if they want to play again.
Difficulty-Based Secret Number Range: The range of the secret number is adjusted based on the difficulty level. For instance, Easy ranges from 0 to 50, Medium from 0 to 100, and Difficult from 0 to 200.
Better User Experience: The game gives clear feedback if the guess is too high or too low, and the player’s points are calculated more precisely.
This version of the code is much more robust, easier to extend, and provides a better experience for both users and developers.