how to recycle pointer

[technologist]

The compiler complains about redeclaration of n_ptr, which makes sense. My goal though was to recycle the pointer and use n_ptr again. I need to know how to do this without memory leaks/side effects. Do I delete the pointer?

snippet

int * n_ptr = x_array;
...other stuff
int y_array[30];
int * n_ptr = y_array;
for(int i = 0; i<30; ++i)
	{
	int * n_ptr = i * 5;
	}

[Moschops]

The complaint is that you're trying to create a whole new object with the same name as an already existing one. Don't create a new pointer. Just reuse the existing one. Line 4 should be: n_ptr = y_array; Line 7 should be *n_ptr = i * 5; (although line 7 makes no sense; I assume you've just not finished it yet).

[technologist]

No need to redeclare n_ptr as it is already type * pointer.

int * n_ptr = x_array;
...other stuff
int y_array[30];
n_ptr = y_array;  // re-use the same one
for(int i = 0; i<30; ++i)
	{
	*n_ptr = i * 5; // change value
	}

Thank you