An Introduction To Programming Through C++ || NPTEL Week-4 Programming Assignment 4.2

 Write a program to keep track of a match consisting of a series of games between two people: player A and player B, and report the outcome. The input consists of a sequence of letters A or B.  If the input is A, it indicates that A has won a game.  If it is B, then it indicates B has won a game.  The first player to win 5 or more games with a difference of 2 or more games between him and his opponent wins the match. If no player wins the match in 20 games then the match is declared a tie after these 20 games have been played.

INPUT

### The next n lines contain a char value each

c0

c1

...

cn

n20 . ciis the outcome of the ithgame. It can take a value of either A/B. A indicates that this game was won by Player A and B indicates that it was won by Player B. The input will end when a player has won according to the given rules or 20 characters have been given.

OUTPUT

At the end of the input, if player A wins, output “ A”, If player B wins output “B”. If no one has won, output “Tie”

Note: DO NOT output the quotes

Please print a newline( using “cout<<endl;” is one way to do it) after printing your answer

SOLUTION:

int main()

{

    int A = 0, B = 0, counter = 0;

    char C;

    while (counter < 20)

    {

        cin >> C;

        switch (C)

        {

        case 'A':

            A++;

            break;

        case 'B':

            B++;

            break;

        }

        counter++;

    }

    if (A - B > 1)

    {

        cout << "A" << endl;

    }

    else if (A == B)

    {

        cout << "Tie" << endl;

    } 

    else

    {

        cout << "B" << endl;

    }

    return 0;

}