21. dynamic allocation 1.malloc().txt

#include <stdio.h>
#include <stdlib.h>

int main() {
   int size;
   int *arr;

   printf("Enter size of array: ");
   scanf("%d", &size);

   // Allocate memory dynamically using malloc()
   arr = (int*) malloc(size * sizeof(int));

   // Check if memory allocation was successful
   if(arr == NULL) {
      printf("Memory allocation failed.");
      exit(1);
   }

   // Input values into the dynamically allocated array
   printf("Enter %d integers:\n", size);
   for(int i = 0; i < size; i++) {
      scanf("%d", &arr[i]);
   }

   // Display the elements of the dynamically allocated array
   printf("Elements of array are:\n");
   for(int i = 0; i < size; i++) {
      printf("%d ", arr[i]);
   }

   // Deallocate memory allocated by malloc()
   free(arr);

   return 0;
}