Need Help With C++ Homework Pointer Arrays

[peq]

Title says it all, basically I'm just trying to print the pointer *p to display all the values in that array.

#include <iostream> 
#include <string> 
//#include <stdlib>
using namespace std;
void extend(double *p, double *q, double *a, int c);

int main()
{
	const int CONST = 10;
	double price[CONST] = { 14.89, 13.21, 16.55, 18.62, 9.47, 6.58, 18.32, 12.15, 3.98 };
	double quantity[CONST] = { 4, 8.5, 6, 7.35, 9, 15.3, 3, 5.4, 2.9, 4.8 };
	double amount[CONST];

//	double *p = &price[0];
	
	
	extend(price, quantity, amount, CONST);


}

void extend(double *p, double *q, double *a, int c)
{
	
	double p1 = *p++;
	cout << p1;
	for(int i = 1; i < 10; i++)
	{
		cout << p1[i];
	}
	


}

[thelamb]

And now we have to guess what the problem is, right? Why don't you help us out and tell us what you're having problems with, ok? Makes things a lot easier for the people willing to spend time trying to help you.

[peq]

error C2109: subscript requires array or pointer type, is the error message I'm getting

[thelamb]

Yes, so how should you go about 'debugging' this?
First, look at the line where you got this error:

cout << p1[i];

Here, you say 'print the ith element of the array p1'. Now lets look at how p1 is declared:

double p1 = *p++;

It's a double!, not an array of doubles.

You should simply discard 'p1' and use 'p' everywhere:

cout << p[i];

[peq]

Got it, completely flew over my head, many thanks.