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01/21/2005 at 06:18PM PST, ID: 21284133
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9.2

Opening files for I/O in functions

Asked by RuletheNet in C++ Programming Language

Hello Experts,

  I have a working C++ program, however it is too cluttered. I want to move a lot of the code to functions (or subroutines as we used to call them in Fortran). I know how to pass variables and arrays to functions. However I am having problems passing on information about files that have been opened in the main function to other functions so that I/O can be done in other functions. For example I have a file opened for input and data read in the main function by:
#include <fstream>
#include <iostream>
...
std::ifstream inf("c:/data/spyprice/clean01122004");
inf.getline(c_secs, 10, ' ');
inf.getline(c_price, 10, ' ');
inf.getline(c_volume, 10);

and it works fine.

However I want to move the above I/O to another function, say to the function initialize defined as:
void initialize(int *idate, int *itime, int *volume, double *price, char c_price[10], char c_date[10], char c_secs[10], char c_volume[10], int icount);

How do I it even after I have opened the file in the main function? It is important to open the file in the main function as there will be yet other functions that will want to access this file.

Thanks in advance!

Regards,

RtN


 
Keywords: Opening files for I/O in functions
Title
1 ofstream seg fault
 
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[+][-]01/21/05 06:54 PM, ID: 13108707

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Zone: C++ Programming Language
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Solution Provided By: bcladd
Participating Experts: 2
Solution Grade: A
 
 
[+][-]01/21/05 06:55 PM, ID: 13108709

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[+][-]01/23/05 09:12 PM, ID: 13118682

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