Reading in INformation.

ok im trying to read in this information which is in an input file.

Ray L. Jones 3942 6 4 1974 3 2 2001
Alice K. Brown 8300 4 8 1969 2 1 1999
Gill R. Alante 4301 8 2 1972 6 5 2000


Now here is my code:

Code:

#include <iostream>
#include <fstream>
#include <string>

using std::string;
using std::cout;
using std::endl;

int main()
{
	

	ifstream inFile("input.dat", ios::in);

  if(!inFile)
   {
    cout << "Could not open the file "
         << "for input.\n";
    exit(1);
   }
  else
   cout << "The file input.dat is open for 
input.\n\n";

 


  string firstName;
  string lastName;
  string middleInitial;
  string employeeID;
  string bmn;  // Birth Month
  string bdy;  // Birth Day
  string byr   // Birth Year
  string hmn;  // Hire Month
  string hdy;  // Hire Day
  string hyr;  // Hire Year

  for(int index = 0 index < 3; index++)
   {
    inFile >> firstName >> middleInitial >> lastName >> employeeID>>bmn
		>>bdy>>byr>>hmn>>hdy>>hyr;
    
   }
  return 0;
 }

I am using vc++ compiler and i keep gettin errors like 32 of them.
Can someone help me please.

Other than maybe that exit() may not be in your header files as listed, and maybe trying

using namespace std;

as a simplyfing statement instead of the individual using statements until you can figure out what is going on

and maybe declaring index outside the for loop (I've heard it can cause problems sometimes when declared inside the loop like that)

your code looks like it should work so it would be nice to have a listing of the first error report or two. Often if you can fix the first one or two errors the others go away, too.

Code:

#include <iostream>
#include <fstream>
#include <string>



int main()
{
	

	ifstream inFile("input.dat", ios::in);

  if(!inFile)
   {
    cerr << "Could not open the file "
         << "for input.\n";
    return 1;
   }
  else
   cout << "The file input.dat is open for 
input.\n\n";

 int index;


  string firstName;
  string lastName;
  string middleInitial;
  string employeeID;
  string bmn;  // Birth Month
  string bdy;  // Birth Day
  string byr   // Birth Year
  string hmn;  // Hire Month
  string hdy;  // Hire Day
  string hyr;  // Hire Year

  for(int index = 0; index < 3; index++)
   {
    inFile >> firstName >> middleInitial >> lastName >> employeeID>>bmn
		>>bdy>>byr>>hmn>>hdy>>hyr;
    
   }
  return 0;
 }

ompiling...
test.cpp
C:\Documents and Settings\Massa\test.cpp(11) : error C2065: 'ifstream' : undeclared identifier
C:\Documents and Settings\Massa\test.cpp(11) : error C2146: syntax error : missing ';' before identifier 'inFile'
C:\Documents and Settings\Massa\test.cpp(11) : error C2065: 'inFile' : undeclared identifier
C:\Documents and Settings\Massa\test.cpp(11) : error C2653: 'ios' : is not a class or namespace name
C:\Documents and Settings\Massa\test.cpp(11) : error C2065: 'in' : undeclared identifier
C:\Documents and Settings\Massa\test.cpp(15) : error C2065: 'cerr' : undeclared identifier
C:\Documents and Settings\Massa\test.cpp(16) : error C2297: '<<' : illegal, right operand has type 'char [25]'
C:\Documents and Settings\Massa\test.cpp(20) : error C2065: 'cout' : undeclared identifier
C:\Documents and Settings\Massa\test.cpp(20) : error C2001: newline in constant
C:\Documents and Settings\Massa\test.cpp(21) : error C2297: '<<' : illegal, right operand has type 'char [32]'
C:\Documents and Settings\Massa\test.cpp(21) : error C2146: syntax error : missing ';' before identifier 'input'
C:\Documents and Settings\Massa\test.cpp(21) : error C2065: 'input' : undeclared identifier
C:\Documents and Settings\Massa\test.cpp(21) : error C2017: illegal escape sequence
C:\Documents and Settings\Massa\test.cpp(21) : error C2017: illegal escape sequence
C:\Documents and Settings\Massa\test.cpp(21) : error C2228: left of '.n' must have class/struct/union type
C:\Documents and Settings\Massa\test.cpp(21) : error C2001: newline in constant
C:\Documents and Settings\Massa\test.cpp(21) : error C2146: syntax error : missing ';' before identifier 'n'
C:\Documents and Settings\Massa\test.cpp(21) : error C2143: syntax error : missing ';' before 'string'
C:\Documents and Settings\Massa\test.cpp(23) : error C2144: syntax error : missing ';' before type 'int'
C:\Documents and Settings\Massa\test.cpp(26) : error C2065: 'string' : undeclared identifier
C:\Documents and Settings\Massa\test.cpp(26) : error C2146: syntax error : missing ';' before identifier 'firstName'
C:\Documents and Settings\Massa\test.cpp(26) : error C2065: 'firstName' : undeclared identifier
C:\Documents and Settings\Massa\test.cpp(27) : error C2146: syntax error : missing ';' before identifier 'lastName'
C:\Documents and Settings\Massa\test.cpp(27) : error C2065: 'lastName' : undeclared identifier
C:\Documents and Settings\Massa\test.cpp(28) : error C2146: syntax error : missing ';' before identifier 'middleInitial'
C:\Documents and Settings\Massa\test.cpp(28) : error C2065: 'middleInitial' : undeclared identifier
C:\Documents and Settings\Massa\test.cpp(29) : error C2146: syntax error : missing ';' before identifier 'employeeID'
C:\Documents and Settings\Massa\test.cpp(29) : error C2065: 'employeeID' : undeclared identifier
C:\Documents and Settings\Massa\test.cpp(30) : error C2146: syntax error : missing ';' before identifier 'bmn'
C:\Documents and Settings\Massa\test.cpp(30) : error C2065: 'bmn' : undeclared identifier
C:\Documents and Settings\Massa\test.cpp(31) : error C2146: syntax error : missing ';' before identifier 'bdy'
C:\Documents and Settings\Massa\test.cpp(31) : error C2065: 'bdy' : undeclared identifier
C:\Documents and Settings\Massa\test.cpp(33) : error C2146: syntax error : missing ';' before identifier 'byr'
C:\Documents and Settings\Massa\test.cpp(33) : error C2065: 'byr' : undeclared identifier
C:\Documents and Settings\Massa\test.cpp(33) : error C2146: syntax error : missing ';' before identifier 'string'
C:\Documents and Settings\Massa\test.cpp(33) : error C2146: syntax error : missing ';' before identifier 'hmn'
C:\Documents and Settings\Massa\test.cpp(33) : error C2065: 'hmn' : undeclared identifier
C:\Documents and Settings\Massa\test.cpp(34) : error C2146: syntax error : missing ';' before identifier 'hdy'
C:\Documents and Settings\Massa\test.cpp(34) : error C2065: 'hdy' : undeclared identifier
C:\Documents and Settings\Massa\test.cpp(35) : error C2146: syntax error : missing ';' before identifier 'hyr'
C:\Documents and Settings\Massa\test.cpp(35) : error C2065: 'hyr' : undeclared identifier
C:\Documents and Settings\Massa\test.cpp(37) : error C2086: 'index' : redefinition
C:\Documents and Settings\Massa\test.cpp(40) : warning C4552: '>>' : operator has no effect; expected operator with side-effect
Error executing cl.exe.

test.exe - 42 error(s), 1 warning(s)

>>using namespace std;
or use another similar method

i don't understand what your saying

Code:

#include <iostream>
#include <fstream>
#include <string>

using namespace std;

int main()
{
/* .... */

The compiler doesn't know what the classes are because it can't find them within its scope. By using namespace std, it will look at the std classes. This will help solve some of your problems. There are others ways to do this as well.

Code:

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

using std :: string;

int main()
{
	

	ifstream inFile("input.dat", ios::in);

  if(!inFile)
   {
    cout << "Could not open the file ";
         
    return 1;
   }
  else
   cout << "The file is open";



  string firstName;
  string lastName;
  string middleInitial;
  string employeeID;
  string bmn;  // Birth Month
  string bdy;  // Birth Day
  string byr;   // Birth Year
  string hmn;  // Hire Month
  string hdy;  // Hire Day
  string hyr;  // Hire Year

  while(inFile >> firstName >> middleInitial >> lastName >> employeeID>>bmn
		>>bdy>>byr>>hmn>>hdy>>hyr)
   {
    
    cout<<firstName<<endl;
   }
  return 0;
 }

Still getting errors.

Compiling...
test.cpp
C:\Documents and Settings\Massa\test.cpp(5) : error C2653: 'std' : is not a class or namespace name
C:\Documents and Settings\Massa\test.cpp(5) : error C2873: 'string' : symbol cannot be used in a using-declaration
C:\Documents and Settings\Massa\test.cpp(24) : error C2065: 'string' : undeclared identifier
C:\Documents and Settings\Massa\test.cpp(24) : error C2146: syntax error : missing ';' before identifier 'firstName'
C:\Documents and Settings\Massa\test.cpp(24) : error C2065: 'firstName' : undeclared identifier
C:\Documents and Settings\Massa\test.cpp(25) : error C2146: syntax error : missing ';' before identifier 'lastName'
C:\Documents and Settings\Massa\test.cpp(25) : error C2065: 'lastName' : undeclared identifier
C:\Documents and Settings\Massa\test.cpp(26) : error C2146: syntax error : missing ';' before identifier 'middleInitial'
C:\Documents and Settings\Massa\test.cpp(26) : error C2065: 'middleInitial' : undeclared identifier
C:\Documents and Settings\Massa\test.cpp(27) : error C2146: syntax error : missing ';' before identifier 'employeeID'
C:\Documents and Settings\Massa\test.cpp(27) : error C2065: 'employeeID' : undeclared identifier
C:\Documents and Settings\Massa\test.cpp(28) : error C2146: syntax error : missing ';' before identifier 'bmn'
C:\Documents and Settings\Massa\test.cpp(28) : error C2065: 'bmn' : undeclared identifier
C:\Documents and Settings\Massa\test.cpp(29) : error C2146: syntax error : missing ';' before identifier 'bdy'
C:\Documents and Settings\Massa\test.cpp(29) : error C2065: 'bdy' : undeclared identifier
C:\Documents and Settings\Massa\test.cpp(30) : error C2146: syntax error : missing ';' before identifier 'byr'
C:\Documents and Settings\Massa\test.cpp(30) : error C2065: 'byr' : undeclared identifier
C:\Documents and Settings\Massa\test.cpp(31) : error C2146: syntax error : missing ';' before identifier 'hmn'
C:\Documents and Settings\Massa\test.cpp(31) : error C2065: 'hmn' : undeclared identifier
C:\Documents and Settings\Massa\test.cpp(32) : error C2146: syntax error : missing ';' before identifier 'hdy'
C:\Documents and Settings\Massa\test.cpp(32) : error C2065: 'hdy' : undeclared identifier
C:\Documents and Settings\Massa\test.cpp(33) : error C2146: syntax error : missing ';' before identifier 'hyr'
C:\Documents and Settings\Massa\test.cpp(33) : error C2065: 'hyr' : undeclared identifier
Error executing cl.exe.

test.exe - 23 error(s), 0 warning(s)

I would replace

using std:: string;

with

using namespace std;

and recompile. If most of your errors go away, and I suspect they will, then go back to trying to reduce contamination of global space, but try proving the problem is here first.

still got the same errors

I notice in your most recent post that the headers have all obtained a .h extension. When using namespace std it is best to avoid .h extensions whenever possible, and all the files included are available without the .h extension. If you truly tried compiling with the .h extensions and with the using namespace std line, the errors would persist.

The style as I understand it is to list individual functions or variables but not individual files:

so

#include <iostream>
#include <string>

using namespace std;
.
.
.


or

#include <iostream>
#include <string>

using std::cout;

.
.
.


but not

#include <iostream>
#include <string>

using std:: string;
.
.
.

well im done with using c++ style i\o im using c now but im getting 2 errors

Code:

#include<fstream.h>                                 // ifstream,ofstream
#include<iomanip.h> 
#include<stdio.h>                                // setw
#include<iostream.h>                                // cout, cin, cerr
#include<stdlib.h>                                  // exit()
#include<string.h>
                                  // string



int main(void)
{
	
  char *firstName;
  char *lastName;
  char *middleInitial;
  char *employeeID;
  char *bmn;  // Birth Month
  char *bdy;  // Birth Day
  char *byr;   // Birth Year
  char *hmn;  // Hire Month
  char *hdy;  // Hire Day
  char *hyr;  // Hire Year

	ifstream inFile("input.dat", ios::in);

  if(!inFile)
   {
    cout << "Could not open the file ";
         
    return 1;
   }
  else
   cout << "The file is open";




  while(!inFile)
   {
		fscanf(inFile,"%s %s,%s,%s,%s.%s,%s,%s,%s,%s",firstName,
			lastName,middleInitial,employeeID,bmn,bdy.byr,hmn,hdy,hyr);
		printf("%s\n",firstName);
   }
  return 0;
 }

Compiling...
test.cpp
C:\Documents and Settings\Massa\test.cpp(42) : error C2228: left of '.byr' must have class/struct/union type
C:\Documents and Settings\Massa\test.cpp(42) : error C2664: 'fscanf' : cannot convert parameter 1 from 'class ifstream' to 'struct _iobuf *'
No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called
Error executing cl.exe.

test.exe - 2 error(s), 0 warning(s)

Code:

#include <iostream>
#include <fstream>
#include <string>
#include <cstdlib>

using namespace std;

int main()
{
	

	ifstream inFile("input.dat", ios::in);

  if(!inFile)
   {
    cout << "Could not open the file "
         << "for input.\n";
    exit(1);
   }
  else
   cout << "The file input.dat is open for input.\n\n";

 


  string firstName;
  string lastName;
  string middleInitial;
  string employeeID;
  string bmn;  // Birth Month
  string bdy;  // Birth Day
  string byr;  // Birth Year
  string hmn;  // Hire Month
  string hdy;  // Hire Day
  string hyr;  // Hire Year

  for(int index = 0; index < 3; index++)
   {
    inFile >> firstName >> middleInitial >> lastName >> employeeID>>bmn
		>>bdy>>byr>>hmn>>hdy>>hyr;
    
   }
  return 0;
 }

now i hope you realise that the bottom for loop will not quite be doing what you think.You will need to alter that to read in the values correctly.
As for your last attempt its an abortion. you are mixing c and c++ io. if you want to use fscanf() then you need to open the file with fopen() and not ifstreams constructor.
The other error is due to a typo in the fscanf(). A . instead of a , but you should have seen that yourself.

thank you