Ok here is my program
Code:
/*
	Project 5 solution 
	11/14/2005
	by Phil Pliuskonis
*/
         

#include<stdio.h>

       


         
// Function prototypes
void title(void);
void initial(void); 
void inputrate(void); 
void inputdata(void);
void process(void);
void unit_price(void);
void sales_cost_ammt(void);
void item_prof(void);
void output_1(void);
void totals(void);
void loop_out(void);
void high_prof(void);
void calc_ta(void); 
void rpt_out(void);
void item_number(void);
// Data declarations

int code[20];
int qty[20];
int ucost[20];
int uprice[20];
int saleamt[20];
int costamt[20];
int itemprof[20];

int tsales, tcost, tunits, ttax, tprof, hiprof, hicode, avgprof, j, x, i, p, q, r, w, t;
float profrate, trate;
char more_item;



main()						
	{
		title();
		initial();	
		inputrate(); 
		item_number();
		while (more_item !='N') 
			{
				process();
			}
		
		
		calc_ta();				
						
		rpt_out();				
		return 0;				
	}
void title(void)
	{
		printf("\nProject 5 by: Phil Pliuskonis\n");
		return;
	}
void inputdata(void)
	{	
		
		
		for (x=0; x<j; ++x)
		{
			printf("\nInput item code:  "); 
			scanf("%d", &code[x]);
		}	
		
		for (x=0; x<j; ++x)
		{
			printf("\nInput item quantity: "); 
			scanf("%d", &qty[x]);
		}	
		
		for (x=0; x<j; ++x)
		{
			printf("\nInput unit cost:  ");
			scanf("%d", &ucost[x]);
		}	
		return;
	}	

void inputrate(void)
	{	
		
		printf("\nInput tax rate (decimal number) : ");
		scanf("%f", &trate);
		printf("\nInput profit rate (decimal number) : ");
		scanf("%f", &profrate);
		return;
	}			
void item_number(void)
{
	printf("\n How many items do you have to input today? :");
		scanf("%d", &j);
		return;
}

void initial(void)
	{					

		tsales = tcost = tunits = hiprof = j = p = q = r = w = x = i = t = 0;
		more_item = 'Y';				 
		return;					
	}
void process(void)					
	{
		inputdata();
		unit_price();
		sales_cost_ammt();
		item_prof();
		output_1();
		totals();
		high_prof();
		loop_out();
		return;			
	}
void unit_price(void)	
	{	
		for (t=0; t<j; ++t)
		{
			uprice[t]= ucost[t] * profrate + ucost[t];
		}	
						
		return;	
	}
void sales_cost_ammt(void)
	{
		for (p=0; p<j; ++p)
		{
		saleamt[p] = qty[p] * uprice[p];
		costamt[p] = qty[p] * ucost[p];
		}	
		
		return;			
	}					

void item_prof(void)
	{
		for (q=0; q<j; ++q)
		{
		itemprof[q] = saleamt[q] - costamt[q];
		}	
		
		return;			
	}				

void output_1(void)
	{
		printf("%4s  %13s  %9s %10s %13s %12s %11s\n", "Item", "Quantity Sold", "Unit Cost", "Unit Price", "Sales Ammount", "Cost Ammount", "Item Profit");
   for ( i = 0; i < j; ++i )
   {
      printf("%4d  %13d  %9d %10d %13d %12d %11d\n", code[i], qty[i], ucost[i], uprice[i], saleamt[i], costamt[i], itemprof[i]);
   }
		return;
	}				

void totals(void)
	{
		for (w=0; w<j; ++w)
		{
		tsales = tsales + saleamt[w];
		tcost = tcost + costamt[w];
		tunits = tunits + qty[w];
		}	
		
		return;			
	}				
void high_prof(void)
{
	for (r=0; r<j; ++r)
		{
			if (itemprof[r] > hiprof)
				{
					hiprof = itemprof[r];
					hicode = code[r];
				}
		}	
	
	return;
}
void loop_out(void)					
	{
		printf("\n Are there any more items to process? (Y/N): ");
		fflush(stdin);
		scanf("%c", &more_item);
		if (more_item == 'n')
		{
			more_item = 'N';
		}	
								
		return;
	}					
void calc_ta(void)
{
	
	tprof = tsales - tcost;
	avgprof = tprof / tunits;
	ttax = trate * tsales;
	return;
}
void rpt_out(void)
	{						
		
		printf("Total sales: %d\n", tsales);
		printf("Total Cost: %d\n", tcost);
		printf("Total profit: %d\n", tprof);
		printf("Average profit: %d\n", avgprof);
		printf("Total tax: %d\n", ttax);
		printf("High profit: %d\n", hiprof);
		printf("High item code: %d\n", hicode);
		return;
	}

Here is the output
Code:
Item  Quantity Sold  Unit Cost Unit Price Sales Ammount Cost Ammount Item Profit
 121             75         50         50          3750         3750           0
 145             50        100        100          5000         5000           0
 201             40        150        150          6000         6000           0
 225             10        300        300          3000         3000           0
 275             22        450        450          9900         9900           0
 331             20        600        600         12000        12000           0
 335             21        700        700         14700        14700           0
 360             10       1000       1000         10000        10000           0
 444             15        500        500          7500         7500           0
 445             20        500        500         10000        10000           0

 Are there any more items to process? (Y/N): n
Total sales: 81850
Total Cost: 81850
Total profit: 0
Average profit: 0
Total tax: 0
High profit: 0
High item code: 0
Now as you can see, I am having trouble getting the correct output.
I narrowed it down and determined that it is all happening because profrate is pretty much = 0.

I input it correctly when I run the program (is supposed to be .2) but I can't figure out why it doesn't take. In the output it keeps acting like 0.

We are re visiting this program (for school), and the first time I did it I couldn't get it to work either. I ended up hardcoding in profrate =.2. That won't work this time however because the assignment requires that it be from input.

Please help, why won't profrate take the .2 value?