#include <iostream>
using namespace std;

int main()
{
char word,words,quit;

do
{
cout << " Player1 : enter a word for P(paper),R(rock) or S(scissor)\n ";
cin >> word ;
cout << " Player2 : enter a word for P(paper),R(rock) or S(scissor)\n ";
cin >> words;

switch (word)
{
case 'P':
case 'p':
if (words=='p' || words == 'p')
cout << " Nobody wins " ;
..

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