Pozz,
evo radim nekakav log in sustav u cpp. i sad zelim kada se ulogiram da ja nesto napisem i da se to snimi u .txt file. ali napise se samo 1 rijec , tipa ako napisem " krave su bjele " u .txt se pojavi samo krave i onda nekakvi brojevi. kako da dobijem cijelu recenicu?
lp 
#include <cstdlib>
#include <iostream>
#include <string>
#include <fstream>
#include <windows.h>
using namespace std;
int main()
{
string line, x;
int z , q ;
string username1="Luka";
string username;
string password1="123";
string password;
loop:
cout << "Please type in your username: " ;
cout << endl;
cin >> username;
cout << "Please type in your password: " ;
cout << endl;
cin >> password;
if (password == password1 & username==username1)
{
cout << "Welcome. \n" ;
cout << "------------------------------------------------------------- \n" ;
cout << "Type what you want to save in notepad.txt! \n " ;
cin >> x ;
cin >> q ;
cout << x << q ;
ofstream examplefile ("DataBase1.txt");
if (examplefile.is_open())
{
examplefile << x;
examplefile << q;
examplefile.close();
/*
PREPISUJE TEKST IZ .TXT FAJLA!
ifstream myfile ("DataBase1.txt");
if (myfile.is_open())
{
while ( myfile.good() )
{
getline (myfile,line);
cout << line << endl;
}
myfile.close();
}
system ("pause");
return 0;
// system("CLS") ;
}
*/
}
}
else
{
cout << "------------------------------------------------------ \n";
cout << "-- Please type in the correct username or password! -- \n";
cout << "------------------------------------------------------ \n";
cout << "\n";
cout << " Press: \n 1.Quit \n 2.Try again \n";
cin >> z ;
if (z==1)
{
system("CLS") ;
cout << "Goodbye! \n" ;
for (int brojac=5;brojac>=1;brojac--)
{
cout<<brojac<<". \n";
Sleep(500);
}
}
else if (z==2)
{
system("CLS") ;
goto loop;
}
}
}
cin svakim pozivom pročita po jednu riječ, ako želiš kompletnu liniju u komadu onda koristi getline
i nemoj koristiti goto...
hmm , sto da stavim umjesto goto?
cek kako sa getline?
npr kad napisem samo ovo :
#include <cstdlib>
#include <iostream>
#include <string>
#include <fstream>
#include <windows.h>
using namespace std;
int main () {
string str;
cout << "Please enter full name: ";
getline (cin,str);
cout << "Thank you, " << str << ".\n";
system ("pause");
}
onda radi getline ali u ovom vecem programu ne :( uopce me ne trazi unos kad napisem.
txh
Brojeve dobijes jer upisuješ varijablu q u datoteku (koja je neinicijalizirani int pa dobijes smece).
Umijesto goto mozes strukturirati malo program tako da ga podjelis u funkcije.
getline mozes natjerati da proradi tako da prije getline pozoves cin.sync() koji ce iscistiti sve zaostale znakove u bufferu.
I prelazis u novu liniju u stringu sa \n a ne sa n :)
Evo tvoj kod (vise manje) razlomljen u funkcije i bez goto u jednoj petlji.
#include <cstdlib>
#include <iostream>
#include <string>
#include <fstream>
#include <windows.h>
using namespace std;
int login()
{
string username, password;
cout << "Please type in your username: ";
cout << endl;
cin >> username;
cout << "Please type in your password: ";
cout << endl;
cin >> password;
if (username == "Luka" && password == "123")
return 1;
else
return 0;
}
void writeFile()
{
string x;
cout << "Welcome. \n";
cout << "------------------------------------------------------------- \n";
cout << "Type what you want to save in notepad.txt! \n ";
cin.sync();
getline(cin,x);
ofstream examplefile("DataBase1.txt");
if (examplefile.is_open()) {
examplefile << x;
examplefile.close();
}
}
int main()
{
int exit = 0;
while (true)
{
if (login())
{
writeFile();
break;
}
else
{
cout << "------------------------------------------------------ \n";
cout << "-- Please type in the correct username or password! -- \n";
cout << "------------------------------------------------------ \n";
cout << "\n";
cout << " Press: \n 1.Quit \n 2.Try again \n";
cin >> exit;
}
if (exit == 1)
break;
}
return 0;
}
Znaci imas beskonacni loop u main()
U njemu se poziva funkcija login koja obavlja provjeru podataka i vraca 1 ako je ok, 0 ako nije.
ako je sve u redu poziva se funkcija writeFile koja uzima tekst i pise datoteku te okoncava program, ako nije pita korisnika nastavak ili ne.
Sve zavrsavanje programa se obavlja jednostavno break-om koji prekida while petlju.
