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

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 : http://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;
}
Posted Date: 3/3/2012 4:17:46 PM | Location : United States







Related Discussions:- Read world population data file. store the values in multipl, computer science, Assignment Help, Ask Question on Read world population data file. store the values in multipl, computer science, Get Answer, Expert's Help, Read world population data file. store the values in multipl, computer science Discussions

Write discussion on Read world population data file. store the values in multipl, computer science
Your posts are moderated
Related Questions
1. Write an algorithm and draw a flowchart to accept the names and gross salary of 5000 employees and to generate the net pay. If the gross salary is greater than N 50,000 declare

Communications Programs : By communications programs, we mean those programs which allow a computer to communicate via a transmission cable to another electronic device. Here we d

Artificial Intelligence Agents: We discussed what we will be talking about in Artificial Intelligence and why those things are important. This chapter is all about how we wi

online project on hrm i.e index page

product of two numbers


158.254 Software Development Lifecycle Management Assignment 1 This assignment focuses on requirements engineering. The context to this assignment is the development of a system

The Scheduling algorithms can be divided into two parts with respect to how they deal with clock interrupts. 1) Nonpreemptive Scheduling: A scheduling

what question can be asked for embedded system

Embedded Operating Systems, Devices have EOS built-in, OPERATING SYSTEM embed on the System itself, Cell phones, PDAs, medical equipment Fast, Application specific Stable a