Question

You will need to copy/paste the files Elements.txt and Diamonds.txt from Module 13 folder into your CodeBlocks project folder. PA 13-1 (25 points) The file, Elements.txt, lists information about chemical elements. The information included in six columns is Atomic Number, Symbol, Name, Atomic Weight, Density (gm/cm), Year discovered. Read in and display the first 10 elements in Elements.txt. G:\CodeBlocks-EP\Marsh2050\bin\Debug Marsh2050.exe 1 H Hydrogen 1.007900 0.090000 1776 2 He Helium 4.002600 0.180000 1895 3 Li Lithium 6.941000 0.530000 1817 4 Be Beryllium 9.012200 1.850000 1797 5 B Boron 10.811000 2.340000 1808 6 C Carbon 12.010700 2.2600000 7 N Nitrogen 14.006700 1.250000 1772 8 0 Oxygen 15.999400 1.430000 1774 9 F Fluorine 18.998400 1.700000 1886 10 Ne Neon 20.179701 0.900000 1898

Answer 1

Ans)

Step1:First create a class elements to store values of each of elements

Step2:include string stream to get values from each line from text file of respective element

Step3:declare array of Elements type of size 10 to store 10 records

Step4:Open file Elements.txt using ifstream. get line by line in stringstream

Step5: read every ement from string stream

Step6:display every element and its respective information

Code:

#include <iostream>

#include <string>

#include <fstream>

#include <sstream>

using namespace std;

class Elements

{

public:

    string atomicnum;

    string symbol;

    string name;

    float atoweight;

    float density;

    int year;

};

int main() {        // main function

    Elements elements[10];

    string filename="Elements.txt";

    // cout << "Enter File name:";

    // cin >> filename;

    int j = 0;

    ifstream file;

    file.open((filename.c_str()));            //if file does not exist   

    if (!file)

    {

        cout << "Cannot Open file";

        return 0;

    }

    int count = 0;

    string out,temp;

    out = "";

    while (!file.eof())             //reading all elements from file

        {    

            getline(file,temp);

            if(j<=9){

            

            stringstream ss(temp);

            ss>>elements[j].atomicnum;

            ss>>elements[j].symbol;

            ss>>elements[j].name;

            ss>>elements[j].atoweight;

            ss>>elements[j].density;

            ss>>elements[j].year;

            ss.clear();

            ss.seekg(0,ios::beg);

            j++;

            }

        }

    file.close();

   

    for (int j = 0; j < 10; j++)

    {

        cout << elements[j].atomicnum << "   " << elements[j].symbol << "   "

            << elements[j].name << "   " << elements[j].atoweight << "   "

            << elements[j].density << "   "

             << elements[j].year<<"\n";

    }

    

    return 0;

}