15. Write a program to find sum of n elements entered by the user. To write this program, allocate memory dynamically using malloc() / calloc() functions or new operator.

 #include <stdio.h>

#include <stdlib.h>

int main()

{

    int* ptr; 

    int limit; 

    int i; 

    int sum; 

    printf("Enter limit of the array: ");

    scanf("%d", &limit);

    ptr = (int*)malloc(limit * sizeof(int));

      for (i = 0; i < limit; i++) {

        printf("Enter element %02d: ", i + 1);

        scanf("%d", (ptr + i));

    }

    

    printf("\nEntered array elements are:\n");

    for (i = 0; i < limit; i++) {

        printf("%d\n", *(ptr + i));

    }

    sum = 0; //assign 0 to replace garbage value

    for (i = 0; i < limit; i++) {

        sum += *(ptr + i);

    }

    printf("Sum of array elements is: %d\n", sum);

        free(ptr); 

    return 0;

}