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rps1.cpp
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rps1.cpp
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//Objective: to play rock, paper, scissors game.
//Name: Kevin Jaewoo Lee 1989282
//Course: COMSC-110-1572
//Compiler: TDM MinGW
//Editor: MS NotePad
//libraries
#include <iostream>
using namespace std;
#include <cstdlib>
#include <ctime>
//Programmer defined data types
//NONE
//Special compiler dependent definitions
//NONE
//global constants/variables
//NONE
//Programmer defined functions
void introduction()
{
// output my name and objective and program information
cout << "Objective: This program will play rock, paper, scissors game..\n";
cout << "Programmer: Kevin Jaewoo Lee 19892 \n";
cout << "Editor(s) used: Notepad\n";
cout << "Compiler(s) used: TDM MinGW\n";
cout << "File: " << __FILE__ << endl;
cout << "Complied: " << __DATE__ << " at " << __TIME__ << endl;
cout << "introduction : Welcome to the game of Rock, Paper, Scissors. You will be asked to choose either R=rock or P=paper or S=scissors, and the computer will do the same. The winner is determined by Rock wins against Scissors, or Scissors wins against Paper, or Paper wins against Rock. The game winner is the player with the most scores. The best player is the player with the highest overall score. " << endl << endl;
}//introduction
//computerPlay
char computerPlay(string q, int computerNumber)
{
//data
char computerChoice;
if (computerNumber == 0)
{
computerChoice = 'R';
cout << q << computerChoice;
}
if (computerNumber == 1)
{
computerChoice = 'P';
cout << q << computerChoice;
}
if (computerNumber ==2)
{
computerChoice = 'S';
cout << q << computerChoice;
}
return computerChoice;
} //computerPlay
//userPlay
char userPlay()
{
//data
char userAnswer;
//output prompt and input user answer
while (true)
{
cout << "Choose: [R=rock, P=paper, S=scissors, or Q=quit]: ";
cin >> userAnswer;
cin.ignore(1000,10);
userAnswer = toupper(userAnswer);
if (userAnswer == 'R') break;
if ( userAnswer == 'P') break;
if ( userAnswer == 'S') break;
if (userAnswer == 'Q') break;
cout << userAnswer << " is invalid input , Try again,,," << endl;
}// while
return userAnswer;
} //userPlay
//determines winner and keep score
string determine(char computerCompare,char userChoice)
{
//data
string whoWin = "";
//compete
switch(computerCompare)
{
case 'R':
if(userChoice == 'R')
{
whoWin = " tie";
cout << whoWin << endl;
}//If R
else if(userChoice == 'P')
{
whoWin = " you win!";
cout << whoWin << endl;
}//if else P
else
{
whoWin = " Computer wins";
cout << whoWin << endl;
} break;
case 'P':
if(userChoice == 'R')
{
whoWin = " Computer wins";
cout << whoWin << endl;
}//If R
else if(userChoice == 'P')
{
whoWin = " tie";
cout << whoWin << endl;
}//if else P
else
{
whoWin = " you win!";
cout << whoWin << endl;
} break;
case 'S':
if(userChoice == 'R')
{
whoWin = " you win!";
cout << whoWin << endl;
}//If R
else if(userChoice == 'P')
{
whoWin = " Computer wins";
cout << whoWin << endl;
}//if else P
else
{
whoWin = " tie";
cout << whoWin << endl;
} break;
}//switch
return whoWin;
}//determine
//main program
int main()
{
//Data
char userChoice;
int computerWin=0;
int userWin=0;
int computerCompare;
string define;
//user introduction
introduction();
//play Rock Paper Scissors game
while (true)
{
userChoice = userPlay();
if (userChoice == 'Q') break;
//computerPlay
computerCompare =computerPlay(" Computer : ", rand() % 3);
//userPlay
cout << " Player : " << userChoice;
//determine winner and keep score
define = determine(computerCompare,userChoice);
if (define == " Computer wins") computerWin = computerWin +1;
if (define == " you win!") userWin = userWin +1;
//output result
cout << " Computer wins : " << computerWin << " Human wins: " << userWin << endl;
}//while loop
cout << "Thanks for playing!";
}//main