Question

C++

Answer 1

#include<iostream>

#include <fstream>

#include <vector>

#include <string>

#include "StatePair.h"

using namespace std;

int main() {

ifstream inFS;

int zip;

int population;

string abbrev;

string state;

unsigned int i;

vector<StatePair <int, string>> zipCodeState;

vector<StatePair<string, string>> abbrevState;

vector<StatePair<string, int>> statePopulation;

inFS.open("zip_code_state.txt");

if (!inFS.is_open()) {

    cout << "Could not open file zip_code_state.txt." << endl;

    return 1;

}

while (!inFS.eof()) {

    StatePair <int, string> temp;

    inFS >> zip;

    if (!inFS.fail()) {

        temp.SetKey(zip);

    }

    inFS >> abbrev;

    if (!inFS.fail()) {

        temp.SetValue(abbrev);

    }

    zipCodeState.push_back(temp);

}

inFS.close();

inFS.open("abbreviation_state.txt");

if (!inFS.is_open()) {

    cout << "Could not open file abbreviation_state.txt." << endl;

    return 1;

}

while (!inFS.eof()) {

    StatePair <string, string> temp;

    inFS >> abbrev;

    if (!inFS.fail()) {

        temp.SetKey(abbrev);

    }

    getline(inFS, state);

    getline(inFS, state);

    state = state.substr(0, state.size()-1);

    if (!inFS.fail()) {

        temp.SetValue(state);

    }

    abbrevState.push_back(temp);

}

inFS.close();

inFS.open("state_population.txt");

if (!inFS.is_open()) {

    cout << "Could not open file state_population.txt." << endl;

    return 1;

}

while (!inFS.eof()) {

    StatePair <string, int> temp;

    getline(inFS, state);

    state = state.substr(0, state.size()-1);

    if (!inFS.fail()) {

        temp.SetKey(state);

    }

    inFS >> population;

    if (!inFS.fail()) {

        temp.SetValue(population);

    }

    getline(inFS, state);

    statePopulation.push_back(temp);

}

inFS.close();

cin >> zip;

for (i = 0; i < zipCodeState.size(); ++i) {

 }

for (i = 0; i < abbrevState.size(); ++i) {

 }

for (i = 0; i < statePopulation.size(); ++i) {

}

}

Statepair.h

#ifndef STATEPAIR

#define STATEPAIR

#include <iostream>

using namespace std;

template<typename T1, typename T2>

class StatePair {

private:

T1 key;

T2 value;

public:

StatePair()

{}

void SetKey(T1 key)

{

this->key = key;

}

void SetValue(T2 value)

{

this->value = value;

}

T1 GetKey() { return key;}

T2 GetValue() { return value;}

void PrintInfo()

{

cout<<key<<" : "<<value<<endl;

}

};