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Message-ID: <20040903112112.2073.qmail@web20227.mail.yahoo.com>
Date: Fri, 3 Sep 2004 04:21:12 -0700 (PDT)
From: pradyut bhattacharya <pradyut100 AT yahoo DOT com>
Subject: file I/O
To: prgc AT yahoogroups DOT com, djgpp AT delorie DOT com
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii

i have written a small file on object I/O. the code

----------------------------------------------

#include <iostream>
#include <fstream>

class student
{
private:
	int Regno;
	char cName[20];
public:
      void setRegno()
      {
      	cout<<”Enter the registration number: “;
      	cin >>Regno;
      }
      void setName()
      {
      	cout <<”\nEnter the name of the student: “;
      	cin >>cname;
      }
      int getRegno()
      {
      	return Regno;
      }
      char *getName()
      {
      	return cName;
      }
};

int main()
{
	ofstream sfil(“studfile.dat”);
	char ch;
	student svar;
	svar.setRegno();
	svar.setName();
	sfil <<svar.getRegno() <<” “ <<svar.getName();
	sfil.close();
      cout <<”\n Do you want to read the contents of
the file(y/n)? “;
      cin >>ch;
      if (ch == ‘y’)
      {
      	ifstream sfil(“studfile.dat”);
      	char iregno;
      	char nam[20];
      	sfil >>iregno >>nam;
      cout <<” \n Registration number is: “ <<iregno;
      cout <<”\n Student name is: “<<nam;
      }
}

---------------------------------------------------

on djgpp compiler it gives the error

------------------------------------------------

file.cc:12: error: stray '\148' in program
file.cc:12: error: stray '\147' in program
file.cc:17: error: stray '\148' in program
file.cc:17: error: stray '\' in program
file.cc:17: error: stray '\147' in program
file.cc: In member function `void
student::setRegno()':
file.cc:12: error: `cout' undeclared (first use this
function)
file.cc:12: error: (Each undeclared identifier is
reported only once for each fu
nction it appears in.)
file.cc:12: error: `Enter' undeclared (first use this
function)
file.cc:12: error: expected `;' before "the"
file.cc:13: error: `cin' undeclared (first use this
function)
file.cc: In member function `void student::setName()':
file.cc:17: error: `cout' undeclared (first use this
function)
file.cc:17: error: `nEnter' undeclared (first use this
function)
file.cc:17: error: expected `;' before "the"
file.cc:18: error: `cin' undeclared (first use this
function)
file.cc:18: error: `cname' undeclared (first use this
function)
file.cc: In function `int main()':
file.cc:32: error: `ofstream' undeclared (first use
this function)
file.cc:32: error: expected `;' before "sfil"
file.cc:32: error: stray '\147' in program
file.cc:32: error: stray '\148' in program
file.cc:37: error: `sfil' undeclared (first use this
function)
file.cc:37: error: stray '\148' in program
file.cc:37: error: stray '\147' in program
file.cc:37: error: expected primary-expression before
'<<' token
file.cc:39: error: `cout' undeclared (first use this
function)
file.cc:39: error: stray '\148' in program
file.cc:39: error: stray '\' in program
file.cc:39: error: `n' undeclared (first use this
function)
file.cc:39: error: expected `;' before "Do"
file.cc:39: error: stray '\147' in program
file.cc:40: error: `cin' undeclared (first use this
function)
file.cc:41: error: stray '\145' in program
file.cc:41: error: stray '\146' in program
file.cc:41: error: `y' undeclared (first use this
function)
file.cc:43: error: `ifstream' undeclared (first use
this function)
file.cc:43: error: expected `;' before "sfil"
file.cc:43: error: stray '\147' in program
file.cc:43: error: stray '\148' in program
file.cc:47: error: stray '\148' in program
file.cc:47: error: stray '\' in program
file.cc:47: error: expected `;' before "Registration"
file.cc:47: error: stray '\147' in program
file.cc:48: error: stray '\148' in program
file.cc:48: error: stray '\' in program
file.cc:48: error: expected `;' before "Student"
file.cc:48: error: stray '\147' in program


		
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