roshambo_1

#include <iostream>
#include <cstdlib>
using namespace std;

int main()
{

    int usr = 1, cpu = 0;

    do
    {
        cout << "Let's play rock-paper-scissors. Enter 1 for rock, 2 for paper, or 3 for scissors." << endl;

        cin >> usr;
    }

    while (usr < 0 || usr > 3);

    if (usr == 1)
        cout << "You chose rock" << endl;

    else if (usr == 2)
        cout << "You chose paper" << endl;

    else if (usr == 3)
        cout << "You chose scissors" << endl;


    srand(time(NULL));
    cpu = rand() %3 + 1;

    if (cpu == 1)
        cout << "Computer chose rock" << endl;

    else if (cpu == 2)
        cout << "Computer chose paper" << endl;

    else
        cout << "Computer chose scissors" << endl;


    if (cpu == usr)
        cout << "It's a tie!" << endl;

    else
    {
        if (usr + cpu == 3)
        {
            cout << "Paper covers rock" << endl;

            if (usr == 2)
                cout << "You win!" << endl;

            else
                cout << "You lose." << endl;
        }

        else if (cpu + usr == 4)
        {
            cout << "Rock crushes scissors" << endl;

            if (usr == 1)
                cout << "You win!" << endl;

            else
                cout << "You lose." << endl;
        }

        else
        {
             cout << "Scissors cut paper" << endl;

             if (usr == 3)
                 cout << "You win!" << endl;

             else
                 cout << "You lose." << endl;
        }
    }

    return 0;
}