Random Guessing Game in C++ - c++

Question

My assignment is to create a guessing game where the computer guesses my number and one where I guess the computer's number. I have my code written out but It's incomplete. I want to create a menu so the user can choose which game he wants to play, and also i am having trouble joining the two programs into one so they both will run. Can someone please assist me. The first game works fine but from there I really don't know what I'm doing.
#include<iostream>
#include<ctime>
#include<cstdlib>
using namespace std;
int main()
{
const int min = 1;
const int max = 100;
int num = 2 && 3 && 4;
int prevMin = 0;
int prevMax = 0;
int tries = 0;
int guess = 0;
int userNum = 0;
int userGuess = 0;
int systemNum = 0;
int systemGuess = 0;
cout << "Welcome to the Guessing Game!" << endl;
cout << "Enter a 2 to play Game 1 or a 3 to play Game 2. Or enter 4 to quit." << endl;
cin >> num;
if (num == 2)
{
cout << "Welcome to Game 1!" << endl;
cout << "User, enter a random number between " << min << " and " << max << " : "; cin >> userNum;
}
srand(time(0));
systemGuess = rand() % 100 + 1;
do
{
cout << "System, guess the user's number between " << min << " and " << max << ": " << systemGuess << endl;
cin.get();
++tries;
if (systemGuess > max || systemGuess<min)
{
cout << "I said guess a number between " << min << " and " << max << " stupid." << endl;
}
if (systemGuess > userNum)
{
cout << "Too high. Guess lower." << endl;
prevMax = systemGuess;
systemGuess = rand() % (prevMax - prevMin) + prevMin;
if (systemGuess == prevMin)
systemGuess++;
}
else if (systemGuess < userNum)
{
cout << "Too low. Guess higher." << endl;
prevMin = systemGuess;
systemGuess = rand() % (prevMax - prevMin) + prevMin;
if (systemGuess == prevMin)
systemGuess++;
}
} while (systemGuess != userNum);
cout << systemGuess << endl;
cout << " I guessed it right! It took me " << tries << " guess(es). " << endl;
srand(time(0));
systemNum = rand()% 100 + 1;
//Beginning of second game
do
{
if (num == 3)
{
cout << "Welcome to Game 2!" << endl;
cout << "User, try to guess the computer's number that's between " << min << " and " << max << " . " << endl;
}
cout << "Enter your guess." << endl;
cin >> userGuess;
tries++;
if (userGuess > systemNum)
{
cout << "Too high. Guess lower." << endl;
cin >> userGuess;
}
else if (userGuess < systemNum)
{
cout << "Too low. Guess higher." << endl;
cin >> userGuess;
}
else
{
cout << "Correct! It took you long enough! Lol... " << endl;
cin >> userGuess;
}
while (userGuess != systemNum);
}
system("pause");
return 0;
}

Answer 1

Make the two games two distinct functions (each with its own local variables), create a third one that is a loop that prompts for the games (and break when "quit" is selected), and call the corresponding function, then call the third one from main.

Answer 2

You can use if...else :
cout << "Welcome to the Guessing Game!" << endl;
cout << "Enter a 2 to play Game 1 or a 3 to play Game 2. Or enter 4 to quit." << endl;
cin >> num;
if (num == 2)
{//game1
}
else if(num==3)
{//game2
}
else if(num==4)
{return 0;
}else
{
cout<<"Invalid choice!";
system("pause");
return 1;
}
//print highscores
system("pause");
return 0;
Your whole code:
#include<iostream>
#include<ctime>
#include<cstdlib>
using namespace std;
int main()
{
const int min = 1;
const int max = 100;
int num = 2 && 3 && 4;
int prevMin = 0;
int prevMax = 0;
int tries = 0;
int guess = 0;
int userNum = 0;
int userGuess = 0;
int systemNum = 0;
int systemGuess = 0;
srand(time(0));
cout << "Welcome to the Guessing Game!" << endl;
cout << "Enter a 2 to play Game 1 or a 3 to play Game 2. Or enter 4 to quit." << endl;
cin >> num;
if (num == 2)
{
cout << "Welcome to Game 1!" << endl;
cout << "User, enter a random number between " << min << " and " << max << " : "; cin >> userNum;
systemGuess = rand() % 100 + 1;
do
{
cout << "System, guess the user's number between " << min << " and " << max << ": " << systemGuess << endl;
cin.get();
++tries;
if (systemGuess > max || systemGuess<min)
{
cout << "I said guess a number between " << min << " and " << max << " stupid." << endl;
}
if (systemGuess > userNum)
{
cout << "Too high. Guess lower." << endl;
prevMax = systemGuess;
systemGuess = rand() % (prevMax - prevMin) + prevMin;
if (systemGuess == prevMin)
systemGuess++;
}
else if (systemGuess < userNum)
{
cout << "Too low. Guess higher." << endl;
prevMin = systemGuess;
systemGuess = rand() % (prevMax - prevMin) + prevMin;
if (systemGuess == prevMin)
systemGuess++;
}
} while (systemGuess != userNum);
cout << systemGuess << endl;
cout << " I guessed it right! It took me " << tries << " guess(es). " << endl;
}
systemNum = rand()% 100 + 1;
//Beginning of second game
if (num == 3)
{
do
{
cout << "Welcome to Game 2!" << endl;
cout << "User, try to guess the computer's number that's between " << min << " and " << max << " . " << endl;
cout << "Enter your guess." << endl;
cin >> userGuess;
tries++;
if (userGuess > systemNum)
{
cout << "Too high. Guess lower." << endl;
cin >> userGuess;
}
else if (userGuess < systemNum)
{
cout << "Too low. Guess higher." << endl;
cin >> userGuess;
}
else
{
cout << "Correct! It took you long enough! Lol... " << endl;
cin >> userGuess;
}}
while (userGuess != systemNum);
}else if(num==4)return 0;
else{
cout<<"Invalid choice!";
system("pause");
return 1;
}
//print highscores
system("pause");
return 0;
}