Read world population data file. store the values in multipl, computer science, Basic Computer Science

Assignment Help:
Read World Population Data File. Store the
values in multiple vectors. Sort them by most
populated region and output the results

ext file is here : https://www.csupomona.edu/~hmzaidi/Winter2012/CS128/WorldPopulation2010.txt

please
show me the code which is working perfectly.

please follow under this code


#include
#include
#include
#include
#include
#include
using namespace std;

int main()
{
// Define vectors to hold the data
vector countryNames;
vector countryCodes;
vector countryPopulations;

// Open the input file
string filename =
"C:\\Teaching\\CSUPomona\\CS128\\Winter2011\\WorldPopulation2010.txt";
ifstream in_file;
in_file.open(filename.c_str(), ios::in);

// Read the header
string header;
getline(in_file, header);

string line;
while (getline(in_file, line))
{
cout << line << endl;

string countryName;
string countryCode;
string countryPopulation;

// Parse the line to extract country name, code & population
for (int i = 0; i < line.length(); i++)
{
if (isdigit((unsigned char)line[i]))
{
countryName = line.substr(0, i);
countryCode = line.substr(i, 3);
countryPopulation = line.substr(i + 3, line.length() - i - 3);

countryNames.push_back(countryName);
countryCodes.push_back(atoi(countryCode.c_str()));
countryPopulations.push_back(atof(countryPopulation.c_str()));

break;
}
}
}

// Sort the vectors based on population
for (int i = 0; i < countryPopulations.size(); i++)
{
for (int j = i + 1; j < countryPopulations.size(); j++)
{
if (countryPopulations[j] < countryPopulations[i])
{
double tempP = countryPopulations[j];
countryPopulations[j] = countryPopulations[i];
countryPopulations[i] = tempP;

int tempC = countryCodes[j];
countryCodes[j] = countryCodes[i];
countryCodes[i] = tempC;

string tempN = countryNames[j];
countryNames[j] = countryNames[i];
countryNames[i] = tempN;
}
}
}

// Write the vectors to a file

string out_filename =
"C:\\Teaching\\CSUPomona\\CS128\\Winter2011\\WorldPopulation2010Sorted.txt";

ofstream out_file;
out_file.open(out_filename.c_str(), ios::out);

for (int i = 0; i < countryPopulations.size(); i++)
{
out_file << countryNames[i] << " "
<< countryCodes[i] << " " << countryPopulations[i] << endl;
}

char key;
cin >> key;

return 0;
}

Related Discussions:- Read world population data file. store the values in multipl, computer science

C program , write a c program of minimum shelf

write a c program of minimum shelf

FCB files:Channels of communication , The use of manage files very much fac...

The use of manage files very much facilitates the creation of files and programmer can focus on other aspects of the programming lacking worrying on details which can be handled by

About the faculty posts, is there any oppurtunity for a mca to teach mcasub...

is there any oppurtunity for a mca to teach mcasubjects online

Explain the probability and non-probability sampling methods, Question 1 W...

Question 1 Write a program to read four floating point numbers and find their sum and average. Question 2 Differentiate string constants and character constants with one exam

Explain data movement ?, In any program it is essential to move the data in...

In any program it is essential to move the data in the memory and in the CPU registers; there are a number of ways to do this: it can copy data in the memory to a number of registe

Experiment with computer system measurements, In this assignment, you need ...

In this assignment, you need to experiment with computer system measurements. Firstly, pick a platform to study. Any Unix-based system (such as a PC running some version of Linu

Geometric mean - algorithm, The geometric mean is obtained by multiplying a...

The geometric mean is obtained by multiplying all the four numbers and taking the fourth root of the product. Let x 1 ,x 2 ,x 3  and x 4  be the given four numbers then geometric

Excel, Your next step is to analyze "proposed" technical requirements/specs...

Your next step is to analyze "proposed" technical requirements/specs based on the business requirements (new performance needs) for Big Bucks. 1.Create a "CRUD" Matrix in an Exce

Finite automata, find the regular expression of(a/?)(a/b)?

find the regular expression of(a/?)(a/b)?

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd