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#include<iostream>
#include<algorithm>
#include<vector>
#include<string>
#include<fstream>
#include<iomanip>
#include<stdlib.h>
using namespace std;
struct addressCard
{
string name;
string street;
string town;
string county;
string postCode;
string country;
int telephoneNumber;
};
// write to an output stream, object into a stream
ostream& operator<< ( ostream& stm, const addressCard& a )
// write one string per line, end with a blank line
{
return stm << a.name << '\n' << a.street << '\n' << a.town << '\n'
<< a.county << '\n' << a.postCode << '\n' << a.country << "\n\n" ;
}
// read from an input stream
istream& operator>> ( istream& stm, addressCard& a )
{
// read one line per string, ignore blank lines at the beginning
// read the first line, after skipping over blank lines
while( getline( stm, a.name ) && a.name.empty() ) ;
// read the remaining lines
if( getline( stm, a.street ) && getline( stm, a.town )
&& getline( stm, a.county ) && getline( stm, a.postCode )
&& getline( stm, a.country ) ) ; // do nothing more
else a = {} ; // clear all fields in a
return stm ;
}
bool genericSort(const addressCard &obj1, const addressCard &obj2) {
if (obj1.name == obj2.name)
if (obj1.street == obj2.street)
if (obj1.town == obj2.town)
if (obj1.county == obj2.county)
if (obj1.postCode == obj2.postCode)
return obj1.country < obj2.country;
else
return obj1.postCode < obj2.postCode; //same as the
//correspondent if condition, replace == with <
else
return obj1.county < obj2.county;
else
return obj1.town < obj2.town;
else
return obj1.street < obj2.street;
else
return obj1.name < obj2.name;
}
const unsigned numberOfPeople = 3;
int main()
{
vector<addressCard> people(numberOfPeople);
for (vector<addressCard>::size_type i = 0; i!=numberOfPeople; ++i)
{
cout <<"Person# " <<i+1<< " name: " << endl;
getline(cin,people[i].name);
cout <<"Person# " <<i+1<< " street: " << endl;
getline(cin,people[i].street);
cout <<"Person# " <<i+1<< " town: " << endl;
getline(cin,people[i].town);
cout <<"Person# " <<i+1<< " county: " << endl;
getline(cin,people[i].county);
cout <<"Person# " <<i+1<< " postCode: " << endl;
getline(cin,people[i].postCode);
cout <<"Person# " <<i+1<< " country: " << endl;
getline(cin,people[i].country);
}
cout <<"\n\n";
cout <<"Sorting....\n";
sort(people.begin(), people.end(), genericSort);
cout <<"Printing results....\n";
for (addressCard &n : people)
{
cout << n.name << endl;
cout << n.street << endl;
cout << n.town << endl;
cout << n.county << endl;
cout << n.postCode << endl;
cout << n.country << endl;
cout <<"\n\n";
}
cout <<"Printing raw vector....\n";
for (vector<addressCard>::size_type i = 0; i!=numberOfPeople; ++i)
{
cout <<people[i].name << endl;
cout <<people[i].street << endl;
cout << people[i].town << endl;
cout <<people[i].county << endl;
cout << people[i].postCode << endl;
cout <<people[i].country << endl;
cout <<"\n\n";
}
cout <<"Writing to file....\n";
const string file_name = "data.txt" ;
ofstream ofile(file_name) ;
for( const addressCard& a : people ) ofile << a ; //vector
//favourites of class type addressCard, object a iterates vector
// and writes it to text file
ofile.close();
cout<<"Writing text file to screen...\n\n";
string x;
ifstream inFile;
inFile.open("data.txt");
if (!inFile) {
cout << "Unable to open file";
return(1); // terminate with error
}
while (getline(inFile,x)) {
cout << x << endl ;
}
inFile.close();
cout <<"Loading text file into existing vector....\n";
//vector<addressCard> addressCardList ; //new vector addressCardList
ifstream ifile(file_name) ; //ifstream reads text file
addressCard a ; //new object
while( ifile >> a ) people.pushback(a) ; //object a reads from text,
// file, fills existing vector people
cout << people.size() << " items were read\n\n" ;
for( const auto& a : people ) cout << a ;
return 0;
}
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