Dear Jos,
Copy, paste and enjoy reading your executables.
As a bonus, there's a byte counter.
See that where ++u is located it also adds the eof byte (it also
belongs to the file, doesn't it?).
Wanting to disregard the eof byte place ++uu here: if (!f.eof())
{cout << byte; ++u;} else break;
Alternatively, leave ++u where it is and subtract 1 later.
# include <fstream>
# include <iostream>
using namespace std;
int main() {//1
char s[256];
cout << "File: ";
cin.getline(s, 256);
ifstream f(s, ios::binary);
if (!f.is_open()) {cout << "Error..." << '\n'; return -1;}
char byte;
unsigned u=0;
while (1) {//2
f >> byte;
++u;
if (!f.eof()) cout << byte; else break;
}//2
cout << "\nBytes: " << u;
f.close();
}//1
--- In [email protected], Jos Timanta Tarigan
<[EMAIL PROTECTED]> wrote:
>
> I dont think im able to convert my class to use f >> byte. Maybe u
should see the method i use. Its in the attachment. Somehow I get
twice the last value '5'. Any got idea?
>
> thanks in advance
>
> ps: why cant i send a file with main.cpp attached?
>
> --- On Thu, 10/9/08, py2akv <[EMAIL PROTECTED]> wrote:
>
> > From: py2akv <[EMAIL PROTECTED]>
> > Subject: [c-prog] Re: Loop to Read Binary File
> > To: [email protected]
> > Date: Thursday, October 9, 2008, 10:59 AM
> > char byte;
> > ifstream f("file");
> >
> > while (1) {
> > f >> byte;
> > if (!f.eof()) cout << byte << '\n';
> > else break;
> > }
> >
> > Mind the break to escape the while on eof found: no
> > additional
> > iteration.
> >
> > The idea is here; modify at will!
> >
> > Geraldo
> >
> >
> > --- In [email protected], Jos Timanta Tarigan
> > <jos_t_tarigan@> wrote:
> > >
> > > Hi,
> > > Im currently try to read a binary file. Im using this
> > loop
> > >
> > > while(!f.eof() {do.something()}
> > >
> > > to do the loop. I notice that this method is nor
> > recommended since
> > there will be an additional loop at the end. How can I
> > loop a binary
> > file without using this loop? What is the other way to do
> > it?
> > >
> > > Thank you
> > >
> > >
> > > Regards
> > >
> > > Jos Timanta Tarigan
> > >
>
>
>
> ----------
>
>
> #include <iostream>
> #include <fstream>
> #include <vector>
> using namespace std;
>
> void writeToFile(ofstream &f, vector<int> &v)
> {
> int type = 0;
> cout<<"Printing vector" << endl;
> for(int i = 0; i<v.size(); i++)
> {
> type = v.at(i);
> f.write(reinterpret_cast<const char *>(&type), sizeof
(int));
> cout << "Write type: " << type << endl;
> }
> }
>
> void readFromFile(ifstream &f, vector<int> &v)
> {
> int type;
> int i = 0;
> while(f)
> {
> f.read(reinterpret_cast<char *> (&type), sizeof(int));
> cout << "Type:" << type<< endl;
> cout << i++ << endl;
> }
> }
>
> int main() {
>
> vector<int> v;
> v.push_back(4);
> v.push_back(5);
> v.push_back(1);
> v.push_back(8);
> v.push_back(5);
>
> ofstream file;
> file.open("testV.txt");
> writeToFile(file, v);
> cout << "FIle written"<<endl;
> file.close();
>
> ifstream inFile;
> inFile.open("testV.txt");
> readFromFile(inFile, v);
> inFile.close();
>
> return 0;
> }
>
>
>
>
> [Non-text portions of this message have been removed]
>
