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  1. #include <stdio.h>
  2. #include <ctype.h>
  3.  
  4. int cardValue(char card) {
  5.     if (card >= '2' && card <= '9') {
  6.         return card - '0';
  7.     } else if (card == 'T' || card == 'K' || card == 'Q' || card == 'J') {
  8.         return 10;
  9.     } else if (card == 'A') {
  10.         return 11;
  11.     } else {
  12.         return -1; // Invalid card
  13.     }
  14. }
  15.  
  16. int blackjackHandValue(char card1, char card2) {
  17.     int value1 = cardValue(card1);
  18.     int value2 = cardValue(card2);
  19.  
  20.     if (value1 == -1 || value2 == -1) {
  21.         printf("*** Invalid card input\n");
  22.         return -1;
  23.     }
  24.  
  25.     int total = value1 + value2;
  26.  
  27.     // Adjust for the case of two aces
  28.     if (card1 == 'A' && card2 == 'A') {
  29.         total = 12;
  30.     }
  31.  
  32.     return total;
  33. }
  34.  
  35. int main() {
  36.     char card1, card2;
  37.  
  38.     printf("Enter cards: ");
  39.     scanf(" %c %c", &card1, &card2);
  40.  
  41.     // Convert to uppercase to handle lowercase input
  42.     card1 = toupper(card1);
  43.     card2 = toupper(card2);
  44.  
  45.     int score = blackjackHandValue(card1, card2);
  46.  
  47.     if (score != -1) {
  48.         printf("The score is %d\n", score);
  49.     }
  50.  
  51.     return 0;
  52. }
Success #stdin #stdout 0s 5288KB
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Enter cards: *** Invalid card input
https://ideone.com/2qm4lc
language:
C++ (gcc 8.3)
created:
2 days ago
visibility:
public

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