Explain the error in the following code. You may give the warning message, or error message, your compiler might give for the following error, or you may describe the error. However you present the error, you must explain clearly what is wrong.

Question

```
#include
//Test question
void show_array(int ar[], int size)
{
using namespace std;
for(int i = 0; i < size; i++)
cout << ar[i] << " ";
cout << endl;
}
int main()
{
const int a[6] = {2, 4, 2, 3, 5};
show_array(a, 6);
//...
}
```

Answer 1

```
void show_array(int ar[], int size)
{ //^^^^ should be const to use a as an
//argument.
//. . .
}

show_array(a, 6);//warning: pointer to const given for
//argument 1 of 'void show_array(int*, int)'
```

The error message means that the compiler thinks the argument could be changed by the function, and considers this a violation of the programmer's promise not to change the array when the array was declared const.