Thread: help needed with game code

hello, i am writing a code to simulate the game rock paper scissors, i have it working, but i have a small problem. the game asks for R P S or Q(quit), then it tells you the outcome of the game, then it prompts the used for another
R P S or Q. but instead of asking for it only once(for the second/third/fourth/etc prompt) , it prints the line twice. i was using fflush(stdin) but i don't want to use that. this is only a minor issue but i was wondering if someone could give me some suggestions to what i am doing wrong. thanks

Code:

#include <stdio.h>
#include <stdlib.h>
#include <time.h>

int main()
{

    int random = rand() % 3;
    int userWinCount = 0 ;
    int computerWinCount = 0;
    int tieCount = 0;
    char choice;
    
    printf("**Rock Paper Scissors Game**\n");
    
    srand(time(NULL));
    
    do
    {
        printf("\nPlease enter R, S, P or Q(Quit)\n");
        scanf("%c" , &choice); 
              
        switch (random)
    {
            case 0:
                  switch (choice) 
    {
                           case 'R': case 'r':
                                printf("Same throw Rock. Game is tie\n");
                                tieCount++;
                                break;
                           case 'S': case 's':
                                printf("Rock breaks scissors! Computer wins\n!");                                       
                                computerWinCount++;                                       
                                break;                                    
                           case 'P': case 'p':
                                printf("Paper covers rock! User wins\n!");
                                userWinCount++;
                                break;
    }    
                  break;
            case 1:
                  switch ( choice )
    {
                           case 'R': case 'r':
                                userWinCount++;
                                printf("Rock breaks scissors! User wins!\n");
                                break;
                           case 'S': case 's':
                                printf("Same throw Scissors. Game is tie\n");
                                tieCount++;
                                break;
                           case 'P': case 'p':
                                computerWinCount++;
                                printf("Scissors cut paper! Computer wins!\n");                      
                                break;
    }
                  break;
            case 2:
                  switch ( choice )
    {
                           case 'R': case 'r':
                                printf("Paper covers rock! Computer wins!\n");
                                computerWinCount++;
                                break;
                           case 'S': case 's':
                                printf("Scissors cut paper! User wins!\n");
                                userWinCount++;
                                break;
                           case 'P': case 'p':
                                printf("Same throw Paper. Game is tie\n");          
                                tieCount++;
                                break;
    }
                    
                  break;
    }
        
    } 
    
    while ( choice != 'Q' && choice != 'q' );
    
    printf("Total User Wins = %d\n" , userWinCount);
    printf("Total Computer Wins = %d\n" , computerWinCount );
    printf("Total Tie Count = %d\n" , tieCount ) ;
    
    system("pause");
    return 0;
}

i had that originally but that actually causes another problem. thank you for trying though.
here is what comes up in my program

please enter r p s or q: (i enter r for example)

(then for ex the program prints) " paper beats rock, computer wins!!

(then the program prints)
please enter r p s or q: (yes this is good)

please enter r p s or q: (i don't want this 2nd prompt to come up)

Are you sure your randomness for the computer choices are really random?

Oh after another look, you may want to add getchar() just before your last squirly brace from your computer's choice switch statement.

thank you! i guess it isn't random, when i put the fflush(stdin) it becomes random and fixes my other problem. but i have read that it is not a good idea to use this. is there anything else that i oculd use that would be equivalent to fflush?

Tools I use, since I am lazy sometimes for indention and quick standards check is

indent
splint

ok so i fixed the problem with it not being random, now i still have the other problem which is that it prompts the user twice for r p s or quit after inputing r p s the first time(see above post at 11:38 for ex.) i tried using choice = getchar() but it still does the same thing. can anyone help me see what i am doing wrong?

Code:

#include <stdio.h>
#include <stdlib.h>
#include <time.h>

int main()
{
    int random; 
    int userWinCount = 0 ;
    int computerWinCount = 0;
    int tieCount = 0;
    char choice;

    printf("**Rock Paper Scissors Game**\n");
     
    srand(time(NULL));

    do
    {   
      
        printf("\nPlease enter R, S, P or Q(Quit)\n");
        scanf("%c", &choice);
        
        random = rand() % 3;

        switch (random)
        {
        case 0:
            switch (choice)
            {
            case 'R': case 'r':
                printf("Same throw Rock. Game is tie!\n");
                tieCount++;
                break;
            case 'S': case 's':
                printf("Rock breaks scissors! Computer wins!\n");
                computerWinCount++;
                break;
            case 'P': case 'p':
                printf("Paper covers rock! User wins!\n");
                userWinCount++;
                break;
            }
            break;
        case 1:
            switch (choice)
            {
            case 'R': case 'r':
                userWinCount++;
                printf("Rock breaks scissors! User wins!\n");
                break;
            case 'S': case 's':
                printf("Same throw Scissors. Game is tie!\n");
                tieCount++;
                break;
            case 'P': case 'p':
                computerWinCount++;
                printf("Scissors cut paper! Computer wins!\n");
                break;
            }
            break;
        case 2:
            switch (choice)
            {
            case 'R': case 'r':
                printf("Paper covers rock! Computer wins!\n");
                computerWinCount++;
                break;
            case 'S': case 's':
                printf("Scissors cut paper! User wins!\n");
                userWinCount++;
                break;
            case 'P': case 'p':
                printf("Same throw Paper. Game is tie!\n");
                tieCount++;
                break;
            }
            break;
        }
    }
    while ( choice != 'Q' && choice != 'q' );

    printf("Total User Wins = %d\n" , userWinCount);
    printf("Total Computer Wins = %d\n" , computerWinCount );
    printf("Total Tie Count = %d\n" , tieCount ) ;

    system("pause");
    return 0;
}