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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#define Max 20 //variables are initialized
using namespace std;
FILE *infile;
struct Product{ //structure with name, price, number of objects in inventory
char name[51];
float price;
int number;
};
struct Bill{
Product inventory[];
int quantity;
char response;
float Total;
};
void initInventory(struct Product *inventory); //functions are shown
void inputProduct(struct Product *inventory);
void displayData(struct Bill);
Product outputData(int pd_id,struct Product inventory[]);
Product getProduct(int pd_id,struct Product inventory[]);
int checkFile();
int main(){
struct Product inventory[Max]; //variables are initialized
int pd_id,i;
if(checkFile()==0) //if statement to check is file exists
{
printf("Couldn't find the txt.file\n");
getchar();
return(1);
}
initInventory(inventory); //functions are run
inputProduct(inventory);
printf("look up an ID:\t"); //asks user what product then want to look up
scanf("%d",&pd_id);
fflush(stdin);
for(i = 0;i < Max;i++) //prints out the product info the user wanted to look up
{
if(pd_id == inventory[i].number && !(pd_id <= 0))
{
printf("%d\t%s\t\t%0.2f\n",getProduct(pd_id,inventory).number,getProduct(pd_id,inventory).name,getProduct(pd_id,inventory).price);
break;
}
}
displayData();
system("Pause");
getchar();
getchar();
return(0); //end of program
}
void initInventory(struct Product *inventory)
{
int i;
for(i = 0;i < Max;i++)
{
strcpy(inventory[i].name,"");
inventory[i].number = 0;
inventory[i].price = 0.0;
}
}
int checkFile() //opens file with inventory on it
{
FILE *infile;
infile = fopen("inventory.txt", "r");
if(infile == NULL)
{
return 0;
}
else
{
return 1;
}
fclose(infile);
}
void inputProduct(struct Product *inventory) //reads the file and prints out whats on it
{
FILE *infile;
int i;
infile = fopen("inventory.txt", "r");
for(i=0; i<5; i++) //for statement for differnet number of product
{
fscanf(infile,"%d",&inventory[i].number);
fscanf(infile,"%s",&inventory[i].name);
fscanf(infile,"%f",&inventory[i].price);
printf("%d\t%s\t\t%0.2f\n",inventory[i].number,inventory[i].name,inventory[i].price);
printf("\n");
}
fclose(infile); //file is closed
fflush(stdin);
}
Product getProduct(int pd_id,struct Product inventory[]) //gets product info
{
int i;
for(i = 0;i < 5;i++)
{
if(pd_id == inventory[i].number)
{
return inventory[i];
}
}
}
void displayData(){
int pd_id,quantity;
char response;
// inputProduct(inventory);
do{
printf("Enter the Product Number: "); //asks for product and quantity
scanf("%d",&pd_id);
printf("What Quantity do you need?: ");
scanf("%d",&quantity);
printf("Would that be all for today? <y/n> ");
scanf ("%s",&response);
}while(response=='n'||response=='N');
//displays the customers bill
char name;
float price,Total;
pd_id=0;
displayData();
system("cls");
printf("Product Nu.\tItem Name\t\tQty\tCost\n"); //shows info in a table
printf("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n");
printf("%d\t%s\t\t%d\t%.2f\n",getProduct(pd_id,inventory).number,getProduct(pd_id,inventory).name,quantity,getProduct(pd_id,inventory).price*quantity);
printf("\t\t\t\t\t\t~~~~~~\n");
printf("Total\t\t\t\t\t\t%.2f",Total);
}
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