8) Write a C program that display and calculate the sum of n numbers by using dynamic memory allocation.

source file name: Memory1.C

 #include<stdio.h>

#include<stdlib.h>

void main()

{

   int nos,i,sum=0;

   int *ptr;

   clrscr();

   printf("Enter the number of elements : ");

   scanf("%d",&nos);

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

   if (ptr==NULL)

   {

      printf("Memory not available");

      exit(0);

   }

   printf("Enter the elements : \n");

   ptr=ptr;

   for(i=1;i<=nos;i++)

   {

      scanf("%d",ptr);

      sum=sum+*(ptr);

      ptr++;

   }

   printf("\nThe sum of elements is %d",sum);

   free(ptr);

   printf("\nDisplaying the cleared out memory location : \n");

   for(i=1;i<=nos;i++)

   {

      printf("%d\n", ptr[i]);

   }

   getch();

}

output: