Added student info and completed week4_1_dynamic_array.c

src/week4_1_dynamic_array.c

@@ -1,38 +1,40 @@
 /*
  * week4_1_dynamic_array.c
- * Author: [Your Name]
- * Student ID: [Your ID]
+ * Author: Mehmet Taha Ünal
+ * Student ID: 231AMB077
  * Description:
- *   Demonstrates creation and usage of a dynamic array using malloc.
- *   Students should allocate memory for an integer array, fill it with data,
- *   compute something (e.g., average), and then free the memory.
+ * Demonstrates creation and usage of a dynamic array using malloc.
+ * Students allocate memory for integers, fill it with user input,
+ * compute the sum and average, and then free the memory properly.
  */
 
 #include <stdio.h>
 #include <stdlib.h>
 
 int main(void) {
-    int n;
-    int *arr = NULL;
+    int n, *arr, sum = 0;
+    double avg;
 
     printf("Enter number of elements: ");
-    if (scanf("%d", &n) != 1 || n <= 0) {
-        printf("Invalid size.\n");
+    scanf("%d", &n);
+
+    arr = (int *)malloc(n * sizeof(int));
+    if (arr == NULL) {
+        printf("Memory allocation failed.\n");
         return 1;
     }
 
-    // TODO: Allocate memory for n integers using malloc
-    // Example: arr = malloc(n * sizeof(int));
-
-    // TODO: Check allocation success
-
-    // TODO: Read n integers from user input and store in array
-
-    // TODO: Compute sum and average
+    printf("Enter %d integers: ", n);
+    for (int i = 0; i < n; i++) {
+        scanf("%d", &arr[i]);
+        sum += arr[i];
+    }
 
-    // TODO: Print the results
+    avg = (double)sum / n;
 
-    // TODO: Free allocated memory
+    printf("Sum = %d\n", sum);
+    printf("Average = %.2f\n", avg);
 
+    free(arr);
     return 0;
 }