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  1. /***************************************************** * COMPLETE SINGLE FILE — ALL QUESTIONS 1 THROUGH 8 * *****************************************************/
  2. #include <stdio.h>
  3. #include <ctype.h>
  4. #include <string.h>
  5.  
  6. /*********************** * 1) REQUIRED MACROS * ***********************/
  7. /* The original macros were incomplete; the names were not followed by parentheses in the definition. */
  8. #define TRIANGLE_PERIMETER(a, b, c) ((a) + (b) + (c))
  9. #define RECTANGLE_AREA(l, w) ((l) * (w))
  10. #define CIRCLE_AREA(r) (3.14159265 * (r) * (r))
  11. #define C_TO_F(c) ((c) * 9.0/5.0 + 32)
  12. #define MAX2(x, y) (((x) > (y)) ? (x) : (y))
  13. /* SWAP should be a statement expression or put in a do-while loop for safety in all contexts */
  14. #define SWAP(a, b, temp) do { temp = a; a = b; b = temp; } while (0)
  15.  
  16. /*************************************** * 2) FUNCTION: euroTotal() * ***************************************/
  17. float euroTotal(int c1, int c2, int c5, int c10, int c20, int c50, int e1, int e2)
  18. {
  19.     float total = 0.0;
  20.     total += c1 * 0.01;
  21.     total += c2 * 0.02;
  22.     total += c5 * 0.05;
  23.     total += c10 * 0.10;
  24.     total += c20 * 0.20;
  25.     total += c50 * 0.50;
  26.     total += e1 * 1.00;
  27.     total += e2 * 2.00;
  28.     return total;
  29. }
  30.  
  31. /********************************************** * 3) FUNCTION: blackjackHandTotal() * **********************************************/
  32. /* The original code had syntax errors (returning strings/non-ints, missing braces). */
  33. int blackjackHandTotal(char card1, char card2)
  34. {
  35.     int value1, value2;
  36.  
  37.     /* Process card1 value */
  38.     if (card1 >= '2' && card1 <= '9') {
  39.         value1 = card1 - '0';
  40.     } else if (card1 == 'T' || card1 == 'K' || card1 == 'Q' || card1 == 'J') {
  41.         value1 = 10;
  42.     } else if (card1 == 'A') {
  43.         value1 = 11;
  44.     } else {
  45.         return -1; /* Signal an illegal card */
  46.     }
  47.  
  48.     /* Process card2 value */
  49.     if (card2 >= '2' && card2 <= '9') {
  50.         value2 = card2 - '0';
  51.     } else if (card2 == 'T' || card2 == 'K' || card2 == 'Q' || card2 == 'J') {
  52.         value2 = 10;
  53.     } else if (card2 == 'A') {
  54.         value2 = 11;
  55.     } else {
  56.         return -1; /* Signal an illegal card */
  57.     }
  58.  
  59.     int total = value1 + value2;
  60.  
  61.     /* Handle the 'Two Aces' case where 11+11 = 22, should be 12 (11+1) */
  62.     if (total == 22) {
  63.         total = 12;
  64.     }
  65.  
  66.     return total;
  67. }
  68.  
  69. /******************************** * 4) FUNCTION: isLegal() * ********************************/
  70. /* Function to check if a single character is a legal card representation (A, 2-9, T, J, Q, K) */
  71. int isLegal(char card) {
  72.     /* Convert to uppercase to handle 'a' through 'k' as well */
  73.     char upper_card = toupper((unsigned char)card);
  74.  
  75.     if ((upper_card >= '2' && upper_card <= '9') || 
  76.         upper_card == 'T' || 
  77.         upper_card == 'J' || 
  78.         upper_card == 'Q' || 
  79.         upper_card == 'K' || 
  80.         upper_card == 'A') {
  81.         return 1; /* True, it is legal */
  82.     } else {
  83.         return 0; /* False, it is not legal */
  84.     }
  85. }
  86.  
  87. /************************************** * 5) FUNCTION: arrayAvg() * **************************************/
  88. /* Function to calculate the average of an integer array */
  89. float arrayAvg(int arr[], int size) {
  90.     if (size <= 0) {
  91.         return 0.0; /* Prevent division by zero */
  92.     }
  93.     long sum = 0; /* Use long to prevent potential overflow of sum */
  94.     for (int i = 0; i < size; i++) {
  95.         sum += arr[i];
  96.     }
  97.     return (float)sum / size; /* Cast sum to float for division */
  98. }
  99.  
  100. /***************************************** * 6) FUNCTION: revString() * *****************************************/
  101. /* Function to reverse a string in place */
  102. void revString(char str[]) {
  103.     int len = strlen(str);
  104.     int start = 0;
  105.     int end = len - 1;
  106.     char temp;
  107.  
  108.     while (start < end) {
  109.         /* Use the SWAP macro defined in Q1 */
  110.         SWAP(str[start], str[end], temp);
  111.         start++;
  112.         end--;
  113.     }
  114. }
  115.  
  116. /***************************************** * 7) FUNCTION: checkPalindrome() * *****************************************/
  117. /* Function to check if a string is a palindrome (ignoring case and non-alphanumeric characters) */
  118. int checkPalindrome(const char original[]) {
  119.     char processed[100]; /* Assuming max 100 useful chars after processing, adjust size as necessary */
  120.     int j = 0;
  121.  
  122.     /* 1. Process the string: only keep letters/numbers and convert to lowercase */
  123.     for (int i = 0; original[i] != '\0'; i++) {
  124.         if (isalnum((unsigned char)original[i])) {
  125.             processed[j++] = tolower((unsigned char)original[i]);
  126.         }
  127.     }
  128.     processed[j] = '\0'; /* Null-terminate the new string */
  129.  
  130.     /* 2. Check if the processed string is the same forwards and backwards */
  131.     int len = strlen(processed);
  132.     for (int i = 0; i < len / 2; i++) {
  133.         if (processed[i] != processed[len - 1 - i]) {
  134.             return 0; /* Not a palindrome */
  135.         }
  136.     }
  137.  
  138.     return 1; /* Is a palindrome */
  139. }
  140.  
  141. /*********************************** * 8) MAIN FUNCTION AND TESTING * ***********************************/
  142. int main() {
  143.     printf("--- 1) MACRO TESTS ---\n");
  144.     float r = 5.0;
  145.     int l = 10, w = 5;
  146.     int a_swap = 10, b_swap = 20, temp_swap;
  147.     printf("Circle Area (r=%.1f): %.2f\n", r, CIRCLE_AREA(r));
  148.     printf("Rectangle Area (l=%d, w=%d): %d\n", l, w, RECTANGLE_AREA(l, w));
  149.     printf("C to F (0C): %.1fF\n", C_TO_F(0));
  150.     printf("Max of (10, 20): %d\n", MAX2(10, 20));
  151.     SWAP(a_swap, b_swap, temp_swap);
  152.     printf("After SWAP, a_swap is %d, b_swap is %d\n", a_swap, b_swap);
  153.  
  154.     printf("\n--- 2) euroTotal() TEST ---\n");
  155.     float total_euros = euroTotal(1, 1, 1, 1, 1, 1, 1, 1);
  156.     printf("Total value of one of each coin/euro: %.2f EUR\n", total_euros);
  157.  
  158.     printf("\n--- 3) blackjackHandTotal() TESTS ---\n");
  159.     printf("Hand (A, A) total: %d\n", blackjackHandTotal('A', 'A'));
  160.     printf("Hand (K, 5) total: %d\n", blackjackHandTotal('K', '5'));
  161.     printf("Hand (T, J) total: %d\n", blackjackHandTotal('T', 'J'));
  162.  
  163.     printf("\n--- 4) isLegal() TESTS ---\n");
  164.     printf("'K' is legal: %d\n", isLegal('K')); // 1
  165.     printf("'Z' is legal: %d\n", isLegal('Z')); // 0
  166.  
  167.     printf("\n--- 5) arrayAvg() TEST ---\n");
  168.     int scores[] = {90, 85, 100, 75};
  169.     int num_scores = sizeof(scores) / sizeof(scores[0]);
  170.     printf("Average of scores: %.2f\n", arrayAvg(scores, num_scores));
  171.  
  172.     printf("\n--- 6) revString() TEST ---\n");
  173.     char s6[] = "Hello World";
  174.     printf("Original string: %s\n", s6);
  175.     revString(s6);
  176.     printf("Reversed string: %s\n", s6);
  177.  
  178.     printf("\n--- 7) checkPalindrome() TESTS ---\n");
  179.     printf("'A man, a plan, a canal, Panama' is palindrome: %d\n", checkPalindrome("A man, a plan, a canal, Panama")); // 1
  180.     printf("'Hello World' is palindrome: %d\n", checkPalindrome("Hello World")); // 0
  181.     printf("'Racecar!' is palindrome: %d\n", checkPalindrome("Racecar!")); // 1
  182.  
  183.     return 0;
  184. }
  185.  
Success #stdin #stdout 0s 5316KB
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--- 1) MACRO TESTS ---
Circle Area (r=5.0): 78.54
Rectangle Area (l=10, w=5): 50
C to F (0C): 32.0F
Max of (10, 20): 20
After SWAP, a_swap is 20, b_swap is 10

--- 2) euroTotal() TEST ---
Total value of one of each coin/euro: 3.88 EUR

--- 3) blackjackHandTotal() TESTS ---
Hand (A, A) total: 12
Hand (K, 5) total: 15
Hand (T, J) total: 20

--- 4) isLegal() TESTS ---
'K' is legal: 1
'Z' is legal: 0

--- 5) arrayAvg() TEST ---
Average of scores: 87.50

--- 6) revString() TEST ---
Original string: Hello World
Reversed string: dlroW olleH

--- 7) checkPalindrome() TESTS ---
'A man, a plan, a canal, Panama' is palindrome: 1
'Hello World' is palindrome: 0
'Racecar!' is palindrome: 1
https://ideone.com/rteZCM
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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