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Write a ‘C’ Program to compute the sum of all elements stored in an array using pointers?

+3 votes
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Write a ‘C’ Program to compute the sum of all elements stored in an array using pointers?
posted Dec 3, 2014 by Manikandan J

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2 Answers

+3 votes
 
Best answer
#include<stdio.h>
#include<conio.h>
void main() {
   int numArray[10];
   int i, sum = 0;
   int *ptr;

   printf("\nEnter 10 elements : ");

   for (i = 0; i < 10; i++)
      scanf("%d", &numArray[i]);

   ptr = numArray; /* a=&a[0] */

   for (i = 0; i < 10; i++) {
      sum = sum + *ptr;
      ptr++;
   }

   printf("The sum of array elements : %d", sum);
}

Output :

Enter 10 elements : 11 12 13 14 15 16 17 18 19 20
The sum of array elements is 155
answer Dec 3, 2014 by Shivaranjini
0 votes

We can use recursive method, something like

int N = array_size;
int *ptr = array;
int sum = 0;

int sum(int *ptr )
{
 if (N == 0)   // array index start with zero
   return *ptr

  N--;
  return sum + sum(ptr + N));
}

Use the method sum(ptr+N)

answer Dec 4, 2014 by sivanraj
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