[C++] Rubrica

**sir daniel** · 08-03-2009, 16:16

Ciao a tutti.
Sto cercando di creare una rubrica in C++.
Fin ora ho tirato giù questo codice:

#include <iostream>
#include <fstream>
using namespace std;

bool write_ppl(); //prototipo della funzione write_ppl()
void ask_pll(); //prototipo della funzione ask_ppl()

int main()
{

int scelta;
char s[];

while (1)
{
cout<<"1- Leggere la rubrica"<<endl;
cout<<"2- Aggiungere un nuovo contatto"<<endl;
//cout<<"3- Uscire"<<endl; da implementare
cin>>scelta;

switch(scelta)
{
case (1):
{
fstream txt=("docs/ppl.txt", ios:

ut);
txt>>s;
txt.close()
cout <<s;
break;
}
case (2):
{
write_ppl();
break;
}
default:
{continue;}
}
}
return 0;
}

//funzione che scrive i contatti sul file docs/ppl.txt
bool write_ppl()
{
string nome[15], cognome[15], email[50], tel[10];

fstream txt=("docs/ppl.txt", ios::in);

cout<<"Inserisci il nome: "<<endl;
cin>>nome;
cout<<"Inserisci il cognome: "<<endl;
cin>>cognome;
cout<<"Inserisci l'email: "<<endl;
cin>>email;
cout<<"Inserisci il numero di telefono: "<<endl;
cin>>tel;

txt <<nome<<" "<<cognome<<" - "<<tel<<" - "<<email; //scrivo i dati nel file
txt.close();

return true;
}

appena do il comando:
g++ -c RuC++.cpp
per compilare il programma mi da una sfilza di errori:

RuC++.cpp: In function ‘int main()’:
RuC++.cpp:12: error: storage size of ‘s’ isn't known
RuC++.cpp:25: error: conversion from ‘const std::_Ios_Openmode’ to non-scalar type ‘std::fstream’ requested
RuC++.cpp: In function ‘bool write_ppl()’:
RuC++.cpp:47: error: conversion from ‘const std::_Ios_Openmode’ to non-scalar type ‘std::fstream’ requested
RuC++.cpp:50: error: no match for ‘operator>>’ in ‘std::cin >> nome’
/usr/include/c++/4.3/istream:123: note: candidates are: std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>:

perator>>(std::basic_istream<_CharT, _Traits>& (*)(std::basic_istream<_CharT, _Traits>&)) [with _CharT = char, _Traits = std::char_traits<char>]
/usr/include/c++/4.3/istream:127: note: std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>:

perator>>(std::basic_ios<_CharT, _Traits>& (*)(std::basic_ios<_CharT, _Traits>&)) [with _CharT = char, _Traits = std::char_traits<char>]
/usr/include/c++/4.3/istream:134: note: std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>:

perator>>(std::ios_base& (*)(std::ios_base&)) [with _CharT = char, _Traits = std::char_traits<char>]
/usr/include/c++/4.3/istream:170: note: std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>:

perator>>(bool&) [with _CharT = char, _Traits = std::char_traits<char>]
/usr/include/c++/4.3/istream:174: note: std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>:

perator>>(short int&) [with _CharT = char, _Traits = std::char_traits<char>]
/usr/include/c++/4.3/istream:177: note: std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>:

perator>>(short unsigned int&) [with _CharT = char, _Traits = std::char_traits<char>]
/usr/include/c++/4.3/istream:181: note: std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>:

perator>>(int&) [with _CharT = char, _Traits = std::char_traits<char>]
/usr/include/c++/4.3/istream:184: note: std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>:

perator>>(unsigned int&) [with _CharT = char, _Traits = std::char_traits<char>]
/usr/include/c++/4.3/istream:188: note: std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>:

perator>>(long int&) [with _CharT = char, _Traits = std::char_traits<char>]
/usr/include/c++/4.3/istream:192: note: std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>:

perator>>(long unsigned int&) [with _CharT = char, _Traits = std::char_traits<char>]
/usr/include/c++/4.3/istream:197: note: std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>:

perator>>(long long int&) [with _CharT = char, _Traits = std::char_traits<char>]
/usr/include/c++/4.3/istream:201: note: std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>:

perator>>(long long unsigned int&) [with _CharT = char, _Traits = std::char_traits<char>]
/usr/include/c++/4.3/istream:206: note: std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>:

perator>>(float&) [with _CharT = char, _Traits = std::char_traits<char>]
/usr/include/c++/4.3/istream:210: note: std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>:

perator>>(double&) [with _CharT = char, _Traits = std::char_traits<char>]
/usr/include/c++/4.3/istream:214: note: std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>:

perator>>(long double&) [with _CharT = char, _Traits = std::char_traits<char>]
/usr/include/c++/4.3/istream:218: note: std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>:

perator>>(void*&) [with _CharT = char, _Traits = std::char_traits<char>]
/usr/include/c++/4.3/istream:242: note: std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>:

perator>>(std::basic_streambuf<_CharT, _Traits>*) [with _CharT = char, _Traits = std::char_traits<char>]
RuC++.cpp:52: error: no match for ‘operator>>’ in ‘std::cin >> cognome’
/usr/include/c++/4.3/istream:123: note: candidates are: std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>: