Question

How to sum of array elements using pointers in C++

Answer 1

#include <iostream>

int main() {
    int arr[] = {2, 5, 7, 0, 1};
    int *p = arr, sum = 0;
    static const size_t len = (sizeof(arr) / sizeof(arr[0]));  

    for (int i = 0; i < len; i++) {
        sum += *(p + i);
    }
 
    std::cout << sum;
 
    return 0;
}
 
 
 
 
/*
run:
 
15
  
*/

 

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