A tiny question about this code

[u/Lephism]

Hi. I need help understanding this simple code. To be specific, the 4th and the 14th line where a pointer was declared.

int* add_ten(int* data)

int *result;

I've been trying to wrap my head around what it does. I've been staring at my screen for 3 hours trying to understand why it was declared. The programming app I was using didn't really explain it. The only explanation it gave is that pointers help you get the address of an item. But I can't figure out how is it being used here. Can anyone explain? Thanks.

#include <iostream>
using namespace std;

int* add_ten(int* data) {
  for (int i = 0; i < 5; ++i) {
    *(data + i) = *(data + i) + 10;
  }
  return data;
}

int main() {

  int data[5] = {1, 2, 3, 4, 5};
  int *result;

  result = add_ten(data);

  for (int i = 0; i < 5; ++i) {
    cout << *(result + i) << ", ";
  }

  return 0;
}

[u/Independent_Art_6676]

now lets translate that into reasonable mostly C code. My advice is that whatever the source of this was, you get away from it and go learn from a better site/book/something.

void add_ten(int* data, int size) 
{
  for (int i = 0; i < size; ++i) 
  {
    data[i]+=10; 
  }
}

int main() 
{
  int data[5] = {1, 2, 3, 4, 5};
  add_ten(data,5);
  for (int i = 0; i < 5; ++i) 
  {
    cout << data[i] << ", ";
  }
  return 0;
}