Reading a User-Defined File

[asad393]

I am writing a programe that can read a user defined specific file , meaning that user has to select the file , which function i have to use for that as on default we read the file that is already setup by the programmer.

[pogrady]

You can get input from the user. That is, if you are talking about a console window.

#include <iostream>
#include <ifstream>
#include <string>

using namespace std;

int main()
{
ifstream file;
string filepath;

cout<<"Please enter the file name: ";
cin>>filepath;

if(!file.open(filepath))
cout<<"No such file or directory.";

//do stuff


return 0;
};

[asad393]

thanks very much and tell me anoter this . my this programe down here only reads upto 50 array characters. i want to read until a period(.) is observed in the text file.

//formatoo.cpp
//writes formateed output to a file, using <<

#include <fstream>
#include <iostream>
#include <string>
#include <conio.h>


using namespace std;

int main(){

   ifstream infile("readdata.txt");
   ofstream outfile("1data.txt");
   int MAX=500;
   char string[MAX];

   while (!infile.eof)  
   {
       infile.getline(string,MAX,'.');               
       outfile<<string;               
       cout << "Data Written";             
          }

getch();
}

[asad393]

and your above programme gives the follwoing error :

`std::ifstream file' has incomplete type and cannot be defined

[pogrady]

thats because ifstream is defined in <fstream> and not <ifstream>. Sorry about that.

[pogrady]

You can use std::getline() instead of istream::getline().

http://www.cplusplus.com/reference/string/getline/

[asad393]

can you correct my code so that it can read upto period.