Question

C++ please!

1) Create two arrays of size 10: one of antique objects and one of integers to represent the quantity of antique

2) Read from standard input the name of the file that stores the initial status of the Merchant's stock

3) Read the content of the file into the array of Antique objects and quantities. The file format is as follows:

<Antique 1 name>, <Antique 1 price>, <Antique 1 quantity>
<Antique 2 name>, <Antique 2 price>, <Antique 2 quantitiy>
...
<Antique 10 name>, <Antique 10 price>, <Antique 10 quantitiy>

You can assume the file will always contain 10 antiques in the above format.

file name: antiquelist.txt

inside the file:

Painting,150.10,10
Lamp,100.20,10
Rug,200.00,10
Clock,100.00,10
Sculpture,300.00,10
Photograph,200.00,10
Pottery,100.00,10
Watch,300.00,10
Wedgwood,70.00,10
Tiles,500.00,10

Answer 1

/* C++ program that takes the input file ,antiquelist.txt and then read the data from the file separated by commas.Then save the data values to the arrays . Then display the arrays data to console window. */
//main.cpp
//include header files
#include<iostream>
#include<fstream>
#include<string>
#include<iomanip>
#include<sstream>
using namespace std;
//start of main function
int main()
{
   //declare variables
   const int size=10; //set size
   string data;
   string substr;
   int index=0;

   //three arrays to store names, price and quantity
   string antiqueNames[size];
   double price[size];
   int quantity[size];

   string filename="antiquelist.txt";
   //Open ifstream file object
   ifstream fin;
   fin.open(filename);
   //check if file not exists
   if(!fin)
   {
       //display message and exit the program
       cout<<"File not found"<<endl;
       system("pause");
       return -1;
   }
   else
   {
       //Read till end of file
       while(!fin.eof() && index<size)
       {
           fin>>data;
           //create a stringstream object
           stringstream ss(data); //create string stream from the string

           getline(ss, substr, ','); //get first string delimited by comma
           antiqueNames[index]=substr;
           getline(ss, substr, ','); //get second string delimited by comma
           //convert string to float type
           price[index]=atof(substr.c_str());

           getline(ss, substr, ','); //get thrid string delimited by comma
           //convert string to integer type
           quantity[index]=atoi(substr.c_str());
          
           //increment index by 1
           index++;
       }
       //close the fin file object
       fin.close();
   }

   //print the antique names,price and quantity values
   cout<<left<<setw(20)<<"AntiqueNames"
               <<setw(10)<<"Price"
               <<setw(10)<<"Quantity"<<endl;
   cout<<left<<setw(20)<<"==============="
               <<setw(10)<<"====="
               <<setw(10)<<"======="<<endl;
   for(index=0;index<size;index++)
   {
       cout<<left<<setw(20)<<antiqueNames[index]
               <<setw(10)<<price[index]
               <<setw(10)<<quantity[index]<<endl;
   }

   system("pause");
   return 0;
}

-------------------------------------------------------------------------------------------------------------------

Input file : antiquelist.txt

Painting,150.10,10
Lamp,100.20,10
Rug,200.00,10
Clock,100.00,10
Sculpture,300.00,10
Photograph,200.00,10
Pottery,100.00,10
Watch,300.00,10
Wedgwood,70.00,10
Tiles,500.00,10

-------------------------------------------------------------------------------------------------------------------

sample output: