Please write in C++. Please look at the example and the example output. **Introduction**In this lab, you will practice using basic input/output, structs, and arrays of structs. Be sure to read this lab thoroughly, especially the Hand-in Procedure.**Lab**To start your lab, you will need a struct to read data into. The struct definition should be placed above `main()` and below `using namespace std`. The struct should be called `PurchaseType` and contain the following fields:1. `string customerID`2. `string productName`3. `double price`4. `int qtyPurchased`5. `double taxRate`Write a complete program that:1. Uses a user-defined function: ```cpp void openFile(ifstream& iFile, string prompt) ``` Which gets the name of a file from the user and opens it into `iFile` by: a. Prompting the user for a filename using `prompt` and reading the filename into a string. b. Opening the file name obtained in (1a) into `iFile`, and verifying that it opened. If the file does not open, the program should output an error message and continue from (1a) until a valid file name is entered. See the example output for error formatting. i. The file contains strings, integers, and doubles with 5 values per line with 10 lines of data in the file. ii. Each line of data represents a different item purchased by a customer.2. Creates an array of instances of the `PurchaseType` struct to hold the data from the file obtained in (1).3. Uses a user-defined function: ```cpp void readFile(ifstream& iFile, PurchaseType purchases[]) ``` Which reads the data from `iFile` into `purchases` by: a. `iFile` contains rows of data which correspond to the elements of the `PurchaseType` struct. Iterate through `iFile` inserting the rows of data, using `str.find()` `str.substr()`, into `purchases` until eof is hit.4. Uses a user-defined function: ```cpp void printPurchaseData(PurchaseType purchases[], int size) ``` Which prints the data contained in `purchases` by: a. Using `iomanip` to nicely output all the data in a tabular format. You will need to calculate the total price for each product purchased by ## Example 3### Command Line Execution- **Command**: `g++ -Wall -pedantic -Werror main.cpp`- **Execution**: `./a.out`### File Input Attempts1. **File Name Entered**: *wrong* - **Error**: Invalid File2. **File Name Entered**: *incorrect.csv* - **Error**: Invalid File3. **File Name Entered**: *invalid.txt* - **Error**: Invalid File4. **File Name Entered**: *err* - **Error**: Invalid File5. **File Name Entered**: *purchases1.csv*### Purchase Data Table| **Customer ID** | **Product Name** | **Price** | **Quantity** | **Tax Rate** | **Total** ||----------------|------------------|-----------|--------------|--------------|-----------|| A134CK2 | shirt | 10.00 | 1 | 8.25 | 10.82 || A134CK2 | pants | 15.95 | 2 | 8.25 | 34.53 || A134CK2 | jacket | 24.49 | 1 | 8.25 | 26.51 || 4J37IZ1 | blouse | 19.95 | 1 | 8.25 | 21.64 || 4J37IZ1 | pants | 14.98 | 1 | 8.25 | 16.22 || 4J37IZ1 | mittens | 9.99 | 3 | 8.25 | 32.44 || 4J37IZ1 | socks | 10.99 | 3 | 8.25 | 35.66 || B834621 | gloves | 9.99 | 2 | 7.15 | 21.41 || B834621 | cap | 24.99 | 2 | 7.15 | 80.33 || 27G8ZZY | earrings |

program.cpp #include <iostream> //header file to display to user and read from user input#include <iomanip> //input ouput manipulator header file#include <fstream> //header file to read filesusing namespace std;/*Function prototypes*///function prototype to open filesvoid openFile(ifstream& iFile, string prompt); //function prototyoe to read file into 2D arrayvoid readFile(ifstream& iFile, double arr[][10], int rowCnt, int colCnt); //function prototype to calculate sum of rowsvoid rowSumCalculator(double arr[][10], int rowCount, int colCount); //function prototype to calculate sum of columnsvoid columnSumCalculator(double arr[][10], int rowCount, int colCount);/*Driver code to test the defined functions*/int main(){//Variable declarationstring prompt = "Enter file name"; //string which we will be prompting to the usersint rowCount = 7; //total number of rows of the arrayint colCount = 10; //total number of columns of the arraydouble array[7][10]; //creating array to store valuesifstream iFile; //input file stream to open and read file data//Defined function callsopenFile(iFile,prompt); //opening the file given by user input into input fileStreamreadFile(iFile,array,rowCount,colCount); //reading data from input file stream to the arrayrowSumCalculator(array,rowCount,colCount); //calculating and displaying sum of each rowscolumnSumCalculator(array,rowCount,colCount); //calculating and displaying sum of each colummnreturn 0;} /*Function Definitions*/ /*Takes parameterprompt of type string to display it to user to enter the value of fileiFile of type ifstream, to open the file*/void openFile(ifstream& iFile, string prompt){string file; //to store user given filename inputcout<<prompt<<endl; // display the given promptcin>>file; //read user input for file name//try opening the fileiFile.open(file);/*If file is successfully opened iFile stream will have true valueif it's not opened successfully it'll have false value*///check if the file is not opened ask the user to enter filename again by displaying error//till file is not opened successfully ask user to enter a valid valuewhile(!iFile){ //display error cout<<"Error opening given file name, '"<<file<<"' Not Found!"<<endl; //prompt the user again to enter filename and read file again cout<<prompt<<endl; cin>>file; //open file again iFile.open(file);}} /*ParamsiFile of type ifstream i.e input file stream to read data fromarr[][] - 2D array to store read valuesrowCount - count of the no. row of the arraycolCount - count of the no. of column of the arrayNOTE: File contains 10 lines and has 7 data per linesreads the data from file input stream to array arr*/void readFile(ifstream& iFile, double arr[][10], int rowCount, int colCount){double value; //variable to store data read from file stream//traversing using for loop for each rowfor(int i=0;i<rowCount;i++){ //traversing each column for the given row for(int j=0;j<colCount;j++){ iFile>>value; //reading file data into value variable //putting value into the array arr[i][j] = value; }}} /*Parametersarr[][] - 2D array of type double containing the valuesrowCount - count of the no. row of the arraycolCount - count of the no. of column of the arrayCalculates the sum of each row and display the values with precision of 1*/void rowSumCalculator(double arr[][10], int rowCount, int colCount){//display we're showing ROW SUMScout<<"ROW SUMS:"<<endl;//traversing for each row of the given arrayfor(int i=0;i<rowCount;i++){ double sum_of_rows = 0; //variable to contain sum of each rows //add the first column value of the given row sum_of_rows+=arr[i][0]; //display the value added cout<<arr[i][0]; //traversing for each column from column index 1 i.e. second column values for each row for(int j=1;j<colCount;j++){ //sum the column value sum_of_rows += arr[i][j]; //display the value added with + operator before //setting precision to 1 //fixed manipulator will print the value in decimal and not in scientific notation //e.g. 1e05 cout<<" + "<<setprecision(1)<<fixed<<arr[i][j]; } //display the row sum value for the given row cout<<" = "<<setprecision(1)<<fixed<<sum_of_rows<<endl; //display next row sums in new line //moving to next row if there's one}} /*Parametersarr[][] - 2D array of type double containing the valuesrowCount - count of the no. row of the arraycolCount - count of the no. of column of the arrayCalculates the sum of each column and display the values with precision of 1*/void columnSumCalculator(double arr[][10], int rowCount, int colCount){//display we're showing COlUMN SUMScout<<"COLUMN SUMS:"<<endl;//traversing for each column of the given arrayfor(int i=0;i<colCount;i++){ double sum_of_col = 0; //variable to contain sum of each column //add the first row value of the given row sum_of_col+=arr[0][i]; //display the value added cout<<arr[0][i]; //traversing for each row from row index 1 i.e. second row values for each column for(int j=1;j<rowCount;j++){ //sum the row value sum_of_col += arr[j][i]; //display the value added with + operator before //setting precision to 1 //fixed manipulator will print the value in decimal and not in scientific notation //e.g. 1e05 cout<<" + "<<setprecision(1)<<fixed<<arr[j][i]; } //display the column sum value for the given column cout<<" = "<<setprecision(1)<<fixed<<sum_of_col<<endl; //display next column sums in new line //moving to next column if there's one}}

Answered: Prototypes for your user defined…

Engineering

Computer Science

Prototypes for your user defined functions are: 1. void openFile (ifstream&, string); 2. void readFile (ifstream&, PurchaseType[]); 3. void printPurchaseData (PurchaseType [], int);

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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