setting the width

Code:

---

#include <iostream>
using namespace std;

void  initialize(double [], int);
void  process  (double [], int);
void  format              (void);
void  display  (double [], int);

int main()
{
        double array[5];

        cout << "Enter five numbers\n" << endl;

        initialize(array, 5);

        process(array, 5);

        format();

        display(array, 5);

        return 0;
}

void  initialize(double array[], int size)
{
        for (register int i = 0; i < size; i++)
        cin >> array[i];
}

void  process  (double array[], int size)
{
        for (register int i = 0; i < size; i++)
                array[i] = array[i] * 2;
}

void  format                        (void)
{
        cout.precision(2);

        cout.width(10);

        cout.setf(ios::fixed | ios:: showpoint);
}

void  display  (double array[], int size)
{
        cout << "\nThe numbers doubled are..." << endl;

        for (register int i = 0; i < size; i++)
                cout << array[i] << endl;
}

---

Why doesn't cout.width(10) work?

The only way I can get it to work is to change the cout statement in the display function's definition to cout << setw(10) << array[i] << endl;

I don't want to use that way since it defeats the purpose of having a formatting function, and the setw method requires that I add #include <iomanip>

AFAIK, setw and width only affect the next piece of data sent to an ostream.

Quote:

---

I don't want to use that way since it defeats the purpose of having a formatting function

---

You could pass the formatting function to display as a function pointer and then use it that way.

Code:

---

void  display(double array[], int size, void (*fmt)())
{
    cout << "\nThe numbers doubled are..." << endl;
    for (register int i = 0; i < size; i++)
    {
        fmt(); 
        cout <<"|"<<array[i] <<"|"<< endl;
    }
}

---

Code:

---

display(array, 5, format);

---

Is there a way to do this without pointers?

Quote:

---

Is there a way to do this without pointers?

---

Yes, hard code the formatting in your display function. Just for my own curiosity, why is everyone so freaked about using pointers?

Pointers are scary. :p

I think I saw one stalking me in the streets the other night. *shivers*

:D