Question

in C language only.

Write a program called gamecards.c that has a card game logic by comparing the cards from 4 people and calculating which player has the best card.

1. Every card must be represented by exactly two chars
representing a rank and a suit.

ranks: '2', '3', '4', '5', '6', '7', '8', '9', 'T', 'J', 'Q', 'K', 'A'. ('T' = 10)

Suits: 'H', 'D', 'S', 'C'.

7D represents the “7 of Diamond” etc..

2. Write a function called isRank(char c) which
calculate if the given character is one of the ranks. It would return a char with a value of 1 if the character is a valid rank and 0 if not.

Write a function called isSuit(char c) which calculate if the given character is one of the suits. It should return a char with a value of 1 if the character is a valid suit and 0 if not.
(Lowercase are not valid for both functions)

Functions should have return value (char) and if it's true or false;

Answer 1

Thanks for the question.

Below is the code you will be needing Let me know if you have any doubts or if you need anything to change.

Thank You !!

===========================================================================

#include<stdio.h>

int isRank(char c){
  
   if(('2'<=c && c<='9') ||(c=='T' || c=='J' || c=='Q' || c=='K' || c=='A')){
       return 1;
   }
   return 0;
}

int isSuit(char suit){
  
   if(suit=='H' || suit=='D' || suit=='S' || suit=='C'){
       return 1;
   }
   return 0;
}

int cardValue(char suit, char rank){
  
   int value=0;
   char ranks[]={'2','3','4','5','6','7','8','9','T','J','Q','K','A'};
   char suits[]={'H','D','S','C'};
  
   int index;
   for(index=0; index<13; index++){
       if(ranks[index]==rank)value=1+index;
   }
   for(index=0; index<4; index++){
       if(suits[index]==suit) value+= index*13;
   }
  
   return value;
}

void getPlayerCard(char *rank, char *suit){
   while(1){
       printf("Enter rank and suit: ");
       scanf(" %c%c",rank,suit);
       if(isRank(*rank) && isSuit(*suit)){
       return;
       }
       else
       printf("Invalid card. Please try again.\n");
      
   }
}

int main(){
  
   char playerOneRank,playerOneSuit;
   char playerTwoRank,playerTwoSuit;
   char playerThreeRank,playerThreeSuit;
   char playerFourRank,playerFourSuit;
  
   getPlayerCard(&playerOneRank,&playerOneSuit);
   getPlayerCard(&playerTwoRank,&playerTwoSuit);
   getPlayerCard(&playerThreeRank,&playerThreeSuit);
   getPlayerCard(&playerFourRank,&playerFourSuit);
  
   int one = cardValue(playerOneSuit,playerOneRank);
   int two = cardValue(playerTwoSuit,playerTwoRank);
   int three = cardValue(playerThreeSuit,playerThreeRank);
   int four = cardValue(playerFourSuit,playerFourRank);
  
   printf("Player One card value: %d\n",one);
   printf("Player Two card value: %d\n",two);
   printf("Player Three card value: %d\n",three);
   printf("Player Four card value: %d\n",four);
  
  
   if(one>=two && one>=three && one>=four){
       printf("Player 1 Wins\n");
   }
   if(two>=one && two>=three && two>=four){
       printf("Player 2 Wins\n");
   }
   if(three>=two && three>=one && three>=four){
       printf("Player 3 Wins\n");
   }
   if(four>=two && four>=three && four>=one){
       printf("Player 4 Wins\n");
   }
  
}

=========================================================================