Question

Write an algorithm

C++

Rock, Paper, Scissors Updated

Take the solution to Lab 3 and make sure the user enters a letter of R, P, or S and the computer generates a number between 0-2 and changes that number to a letter of R, P or S, using a switch. Make sure the user knows why he/she has won or lost – print a message like “Paper covers Rock” or “Scissors cuts Paper”.

Ask the user how many times he/she wants to play and incorporate that into a for loop or allow the user to keep playing until he/she says to stop using a do-while loop.

Add the code to count how many wins, losses and ties that the user has and print the results at the end of the program before stopping the program.

Allow the user to exit a game, not the program, if he wants to – use a code of ‘X’. Also keep a count of exits from a game. Make sure your run has at least one exit.

Also have the program determine if a user did not type in R, P, S or X and print “Bad Code” and allow the user to continue the game. Run at least once with a “Bad Code”.

Answer 1

Note: Could you plz go this code and let me know if u need any changes in this.Thank You
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#include <iostream>
#include <cstdlib>
#include <ctime>
#include <cctype>
using namespace std;
// Function Declaration
int computerPicks();
char getUserChoice(int &exits);
char displayComputerChoice(int comp);
void playGame(char userchoice, char computerchoice,int &wins,int &losses,int &ties);
int main()
{
// Declarig the variables
char userchoice, computerchoice, ch;
string winner;
int wins=0,losses=0,ties=0,exits=0;
srand ((unsigned)time(0));
while (true)
{
userchoice = getUserChoice(exits);
if(userchoice!='X')
       {
   // Calling the function
int comp = computerPicks();
computerchoice = displayComputerChoice(comp);
playGame(userchoice, computerchoice,wins,losses,ties);      
       }
  
    cout << "\nDo you Want to play again(Y/N) ?";
cin >> ch;

if (ch == 'y' || ch == 'Y')
{

continue;
}
else
{
   cout<<"No of Wins :"<<wins<<endl;
   cout<<"No of Losses :"<<losses<<endl;
   cout<<"No of Ties :"<<ties<<endl;
   cout<<"No of Exits :"<<exits<<endl;
break;
}
     
  
}

return 0;
}
/* Function implementation which
* randomly picks the computer's choice
*/
int computerPicks()
{
int computerchoice;

// Computer randomly picking number(either 0 or 1 or 2)
computerchoice = (rand() % (3));

return computerchoice;
}
// This function will get the computer choice
char displayComputerChoice(int comp)
{
char computerchoice;
// Getting the computer choice
if (comp == 0)
computerchoice = 'R';
else if (comp == 1)
computerchoice = 'P';
else if (comp = 2)
computerchoice = 'S';

/* based on the computer choice
* the corresponding case will get executed
*/
switch (computerchoice)
{
case 'R':
cout << "Computer Picks Rock" << endl;
break;
case 'P':
cout << "Computer Picks Paper" << endl;
break;
case 'S':
cout << "Computer Picks Scissors" << endl;
break;
}
return computerchoice;
}

// This function will get the valid user choice entered by the user
char getUserChoice(int &exits)
{
char userchoice;
/* This loop continues to execute until user
* enter valid number(either 'R' or 'P' or 'S' or 'Q')
*/
while (true)
{
// Getting the users choice
cout << "Enter 'R'= Rock , 'P'=Paper , 'S'=Scissors , 'X'= Exit :";
cin >> userchoice;

// Based on the users choice the corresponding case will get executed
switch (userchoice)
{
case 'R':
case 'r':
{
cout << "\nPlayer Picks Rock" << endl;
break;
}

case 'P':
case 'p':
{
cout << "\nPlayer Picks Paper" << endl;
break;
}
case 'S':
case 's':
{
cout << "\nPlayer Picks Scissors" << endl;
break;
}
case 'x':
case 'X':
{
   cout<<"** Game Exit **"<<endl;
exits++;
break;
}

default:
{
cout << "\nBad-Code." << endl;
continue;
}
}
break;
}
  
if(islower(userchoice))
userchoice=userchoice-32;

return userchoice;
}

// This function will start the game between player and computer
void playGame(char userchoice, char computerchoice,int &wins,int &losses,int &ties)
{
// Declaring variables
char rock = 'R', paper = 'P', scissors = 'S';
string winner;
/* Based on user and computer selected numbers
* the corresponding block will get executed
*/
if (userchoice == rock && computerchoice == scissors)
{
   cout<<"Rock smashes Scissors"<<endl;
winner = ":: Player Wins ::";
wins++;
}
else if (userchoice == scissors && computerchoice == rock)
{
   cout<<"Rock smashes Scissors"<<endl;
winner = ":: Computer Wins ::";
losses++;
}
else if (userchoice == rock && computerchoice == paper)
{
   cout<<"Paper covers Rock"<<endl;
winner = ":: Computer Wins ::";
losses++;
}
else if (userchoice == paper && computerchoice == rock)
{
   cout<<"Paper covers Rock"<<endl;
winner = ":: Player Wins ::";
wins++;
}
else if (userchoice == paper && computerchoice == scissors)
{
   cout<<"Scissors cuts Paper"<<endl;
winner = ":: Computer Wins ::";
losses++;
}
else if (userchoice == scissors && computerchoice == paper)
{
   cout<<"Scissors cuts Paper"<<endl;
winner = ":: Player Wins ::";
wins++;
}
else
{
winner = ":: Draw ::";
ties++;
}

// Displaying the Result.
cout << winner << endl;
}

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Output:

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