C Program to Find the Sum of N elements entered by the user using malloc() and free()

Learn about C Program to Find the Sum of N elements entered by the user using malloc() and free() – Pointer in the below code example. Also refer the comments in the code snippet to get a detailed view about what’s actually happening.

C Program to Find the Sum of N elements entered by the user using malloc() and free() – Pointer

C program that uses dynamic memory allocation, i.e. pointers, to find the sum of N numbers entered by the user. We shall use malloc() and free() in the first way (). We shall use calloc() and free in the second approach ().

Source code:

#include<stdio.h>
#include<stdlib.h>
int main()
{
  int num, i, *ptr, sum=0;

  printf("Enter total number of elements(1 to 100): ");
  scanf("%d", &num);

  // memory allocated using malloc()
  ptr= (int*) malloc (num*sizeof(int));

  if(ptr==NULL)
  {
    printf("Memory not allocated.");
    return EXIT_FAILURE;
  }

  printf("Enter elements :\n");

  for(i=0;i<num;i++)
  {
     scanf("%d",ptr+i);
     sum += *(ptr+i);
  }

  printf("Sum= %d",sum);
  free(ptr);

  return 0;
}

Output:

Enter total number of elements(1 to 100): 4
Enter elements :
5
15
20
40
Sum = 80

Hope above code works for you and Refer the below Related Codes to gain more insights. Happy coding and come back again.

C Program to Find the Sum of N elements entered by the user using malloc() and free() – Pointers

C Program to Find the Sum of N elements entered by the user using malloc() and free() – Pointer

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