Question

Program Requirements:

Write a C++ program according to the following requirements:

1.   Open the data file Electricity.txt and read each column into an array (8 arrays total).

2.   Also create 2 arrays for the following:

• Total Fossil Fuel Energy (sum of all fossil fuels)
• Total Renewable Energy (sum of all renewable sources)

Electricity.txt:

Net generation United States all sectors monthly
https://www.eia.gov/electricity/data/browser/
Source: U.S. Energy Information Administration
All values in thousands of megawatthours
Year   all fuels   coal       natural gas   nuclear       hydroelectric   wind       solar
2018   347576.0   95496.8       122393.9   67257.0       24377.0       22720.8       7780.4
2017   336189.2   100486.3   108034.6   67079.1       25027.8       21191.9       6439.7
2016   339722.9   103262.4   114858.9   67141.2       22317.7       18916.0       4572.2
2015   339800.1   112699.8   111123.5   66431.5       20756.7       15893.2       3252.7
2014   341133.8   131809.2   93884.1       66430.5       21613.9       15137.9       2410.3
2013   338830.3   131759.6   93736.3       65751.4       22380.4       13986.6  
2012   337313.8   126170.2   102157.8   64110.9       23020.0       11735.1  
2011   341678.4   144452.5   84474.1       65850.4       26612.9       10014.7  
2010   343755.0   153940.9   82308.1       67247.4       21683.6       7887.7  
2009   329194.2   146325.4   76748.2       66571.2       22787.1       6157.2  
2008   343282.3   165483.4   73581.7       67184.0       21235.9       4613.6  
2007   346395.4   168038.0   74715.8       67202.1       20625.8       2870.8  
2006   338725.2   165875.9   68036.7       65601.6       24103.9       2215.8  
2005   337951.9   167739.4   63413.4       65165.5       22526.8       1484.2  
2004   330879.6   164858.4   59175.0       65710.7       22368.1       1178.6  
2003   323598.8   164478.1   54159.0       63644.4       22983.9       932.3  
2002   321537.7   161094.2   57583.8       65005.3       22027.4       862.9  
2001   311387.0   158663.0   53260.8       64068.9       18080.1       561.4

Answer 1

C++ CODE:

#include <iostream>

#include <fstream>

#include <iomanip>

#include <string>

using namespace std;

int main() {

    // Open file to read

    ifstream infile("Electricity.txt");

    // Validate if file has been opened or not

    if(!infile){

        cout << "Error: Cannot open file" << endl;

        return 1;

    }

    const int MAX = 18;

    // Create arrays to read each column from the file

    int year[MAX];

    float allFuels[MAX], coal[MAX], naturalGas[MAX], nuclear[MAX], hydroelectric[MAX], wind[MAX], solar[MAX], totalFossilFuel[MAX], totalRenewableFuel[MAX];

    // To read first 5 lines in the text file

    string line;

    // Read first 5 lines and discard them

    for(int i = 0; i < 5; i++)

        getline(infile, line);

    // Read each row's columns

    for(int i = 0; i < MAX; i++){

        infile >> year[i];

        infile >> allFuels[i];

        infile >> coal[i];// This is a fossil fuel

        infile >> naturalGas[i];// This is a fossil fuel

        infile >> nuclear[i];

        infile >> hydroelectric[i];

        infile >> wind[i];// This is a renewable fuel

        infile >> solar[i];// This is a renewable fuel

        totalFossilFuel[i] = coal[i] + naturalGas[i];

        totalRenewableFuel[i] = wind[i] + solar[i];

    }

    // Print array of total fossil fuel energy and renewable energy

    cout << left << setw(6) << "Year" << setw(30) << "Total Fossil Fuel Energy" << setw(25) << "Total Renewable Energy" << endl;

    for(int i = 0; i < MAX; i++){

        cout << left << setw(6) << year[i] << setw(30) << setprecision(1) << fixed << totalFossilFuel[i] << setw(25) << totalRenewableFuel[i] << endl;

    }

    return 0;

}

Electricity.txt:

OUTPUT:

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