// structdemo.cpp CIS 205 C/C++ Programming  04/15/2002

// This program demonstrates structure passing by value and by reference

// Adapted from Gaddis Fig 11.8 p. 626

/*	Sample Interaction

C:\cis205\2002\spring\examples>structdemo
You will be prompted to enter information for 3 items:

Enter part number 1 (25 chars max): 235EFX
Enter part 1 description (100 chars max): Widget Number One
Enter part 1 qty unit of measure (each, lbs ...): each
Enter part 1 inventory quantity on hand: 144
Enter part 1 price ($'s): 19.87

Enter part number 2 (25 chars max): 34-01-45e
Enter part 2 description (100 chars max): Widget Number Two
Enter part 2 qty unit of measure (each, lbs ...): gallons
Enter part 2 inventory quantity on hand: 2400
Enter part 2 price ($'s): 1.48

Enter part number 3 (25 chars max): T-33RT (blue)
Enter part 3 description (100 chars max): Widget Number Three
Enter part 3 qty unit of measure (each, lbs ...): lbs
Enter part 3 inventory quantity on hand: 23000
Enter part 3 price ($'s): 0.47

Here is the information you entered:

Information for item 1:
Part Number: 35EFX
Description: Widget Number One
Qty on Hand: 144.00 each
Unit  Price: $19.87

Information for item 2:
Part Number: 34-01-45e
Description: Widget Number Two
Qty on Hand: 2400.00 gallons
Unit  Price: $1.48

Information for item 3:
Part Number: T-33RT (blue)
Description: Widget Number Three
Qty on Hand: 23000.00 lbs
Unit  Price: $0.47


*/

#define MAX_ITEMS 3  // change as needed
#define MAX_CHARS 50 // change as needed

#include <iostream.h>

struct InvItem  // note uppercase!
{
	// note primitive variable sanity notation 
	// intVarName, chrVarName, fltVarName, dblVarname
	char chrPartNumber[MAX_CHARS / 2];  // part numbers can be alphanumeric!
	char chrPartDesc[MAX_CHARS * 2];
	char chrQtyUnit[MAX_CHARS / 4];  // gallons, lbs, kg, each etc.
	float fltQtyOnHand;  // quantites for example weights can be fractional!
	float fltUnitPrice;
};

// function skeletons - prototypes

// a mutator method; note &, we send a memory address of an InvItem:
void setItemInfo(int, InvItem &); 

// an accessor method, we send a copy of an InvItem: 
void showItemInfo(int, InvItem);  

int main(void)
{

	int i;
	InvItem partInvItem[MAX_ITEMS];  // note sanity notation: nameStructName

	cout << "You will be prompted to enter information for 3 items:" << endl;
	cout << endl;
	for(i = 0; i < MAX_ITEMS; i++)
	{
		setItemInfo(i, partInvItem[i]);
		cout << endl;
	}

	cout << "Here is the information you entered:" << endl;
	cout << endl;
	for(i = 0; i < MAX_ITEMS; i++)
	{
		showItemInfo(i, partInvItem[i]);
		cout << endl;
	}

	return 0;
}

// this method accepts a memory reference to the specific structure item we want to update
// note the & used to specify a memory address
void setItemInfo(int intItemCount, InvItem &someInvItem)
{

	cin.get(); // discard the rest of the line

	cout << "Enter part number " << (intItemCount + 1) <<  " (" << (MAX_CHARS / 2) << " chars max): ";
	cin.getline(someInvItem.chrPartNumber, MAX_CHARS);

	cout << "Enter part " << (intItemCount + 1) << " description (" << (MAX_CHARS * 2) << " chars max): ";
	// we need to be careful, the description is likely to have spaces in it!
	// if we used cin someInvItem.description we would only capture
	// up to the first space character text the user entered
	cin.getline(someInvItem.chrPartDesc, MAX_CHARS);

	cout << "Enter part " << (intItemCount + 1) << " qty unit of measure (" << (MAX_CHARS / 4) << " chars--each, lbs): ";
	cin.getline(someInvItem.chrQtyUnit, MAX_CHARS);

	cout << "Enter part " << (intItemCount + 1) << " inventory quantity on hand: ";
	cin >> someInvItem.fltQtyOnHand;

	// prompt the user to enter the price here!!

	
	


}

// this method accepts a copy of the specific structure item we want to show
void showItemInfo(int intItemCount, InvItem someInvItem)
{
	// first some output formatting instructions to make for pretty output
	cout.precision(2);
	cout.setf(ios::fixed); // always show trailing zeros
	cout.setf(ios::showpoint); // always show the decimal point

	// now we can output the information
	// put your code here!!
	
	

}