I am writing a POS system for HW, and I had to take my first code which used hundreds of variables and change it into a more compact program using arrays. This is my new code:
#include <stdlib.h>
#include <stdio.h>
#include <conio.h>
//---------------------------------------------------------------------------------------------------------
//---------------------------------------------------------------------------------------------------------
//------------------------------------------Declaring-Variables--------------------------------------------
//---------------------------------------------------------------------------------------------------------
//---------------------------------------------------------------------------------------------------------
//Discount Variables
int iPerPurchaseDiscountPercent = 0; //enter a number which will be later changed to a percentage
int iFinalPurchaseDiscountPercent = 0;//enter a number which will be later changed to a percentage
float fPerPurchaseDiscountPercent = 0;//the percentage value of discount per item
float fFinalPurchaseDiscountPercent = 0;//percentage value of final dicount
float fPerPurchaseDiscountPrice = 0;//price at which discounts will be applied
float fFinalPurchaseDiscountPrice = 0;//price at which the final shop discount will be appled
//Array values for math
float fItemPrice[100] = { 0 }; //Price of Item
int iItemQuantity[100] = { 0 }; //Quantity of that Item
float fBundleCost[100] = { 0 }; //Price before Discounts (fItemPrice[N] * fItemQuantity[N])
float fDiscountPerItem[100] = { 0 }; //What discount is recieved per item (fItemPrice[N] * iPerPurchaseAmount)
float fItemTotalDiscountRecieved[100] = { 0 }; //Total discount recieved on multiple items of same type (fDicountPerItem * iItemQuantity)
float fDiscountPrice[100] = { 0 };//Price for item after all discounts (fBundleCost - fDiscountRecieved)
//Values for while loop
bool bStillShopping = true;
int iItemCount = 0;
char cExitQuestion = 'y';
//---------------------------------------------------------------------------------------------------------
//---------------------------------------------------------------------------------------------------------
//-----------------------------------------------Prototyping-----------------------------------------------
//---------------------------------------------------------------------------------------------------------
//---------------------------------------------------------------------------------------------------------
//---------------------------------------------------------------------------------------------------------
//---------------------------------------------------------------------------------------------------------
//------------------------------------------------Main-Loop------------------------------------------------
//---------------------------------------------------------------------------------------------------------
//---------------------------------------------------------------------------------------------------------
int main(void)
{
printf("Welcome to Blacketts bookstore!\t\t\t\t\t\tPOS V2\n");
//Taking values for the per item discounts
printf("Please enter the price that discounts per item will be applied: ");
flushall();
scanf("%f", &fPerPurchaseDiscountPrice); //takes the value at which items will be discounted
printf("Please enter the percentage to be applied at this price: ");
flushall();
scanf("%d", &iPerPurchaseDiscountPercent); //takes a value eg 10 to be later changed to .1 for 10%
fPerPurchaseDiscountPercent = iPerPurchaseDiscountPercent/100; //changes the int to a float and makes it appropriate for percentage calculations
//Taking values for the final purchase discount
printf("Please enter the price that end of sale discounts will be applied to: ");
flushall();
scanf("%f", &fFinalPurchaseDiscountPrice); //takes the value at which the whole docket will be discounted by
printf("Please enter the percentage to be applied at this price: ");
flushall();
scanf("%d", &iFinalPurchaseDiscountPercent);//takes a value eg 5 to be later changed to .05 for 5%
fFinalPurchaseDiscountPercent = iFinalPurchaseDiscountPercent/100; //changes the int to a float and make it appropriate for percentage calculations
//While loop to take values and input them into appropriate places
while(bStillShopping == true)
{
iItemCount = 1; // Counting how many items are being purchased, 0 = 1st item. therefore Total quantity Items must equal iItemCount+1
printf("\nPlease enter the price of the first item to be purchased: "); //enter price of item
flushall();
scanf("%.2f", fItemPrice[iItemCount]);
printf("Please enter the quantity of that item: "); //enter quantity
flushall();
scanf("%d", iItemQuantity[iItemCount]);
printf("\nWould you like to enter any more Items? (y/n): "); //ask to continue
flushall();
scanf("%c", &cExitQuestion);
if(cExitQuestion == 'n')
{
bStillShopping = false; //if dont want to continue exit the loop
}
else
{
iItemCount++; //if do continue increment item loop and ask for more variables
}
}
getch();
}
When I get to inputting the quantity at iItemQuantity[iItemAmout] it will crash the program with an unhandled exception. I also did some debugging print statements inbetween code to see where it gets to and output what variables I inputed and the returned values did not match up, all I received were 0.00.
Help would be much appreciated and I hope I am not asking an already answered question somewhere else. Still don't really know how to navigate the site.
I know the code does not do anything else at present time but I do not see the point in continuing until the first problems are corrected.
