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From: "Aaron Isotton" <aisotton DOT remove AT spam DOT bigfoot DOT com>
Newsgroups: comp.lang.c,comp.os.msdos.djgpp,comp.lang.c++
Subject: Re: String substitution to another
Date: Mon, 3 Dec 2001 14:36:50 +0100
Organization: WIND Telecomunicazioni S.p.A.
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References: <3C0BEC9D DOT 4D74A6CA AT surfeu DOT fi>
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To: djgpp AT delorie DOT com
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"Mr. Veli Suorsa" <veli DOT suorsa AT surfeu DOT fi> ha scritto nel messaggio
news:3C0BEC9D DOT 4D74A6CA AT surfeu DOT fi...
> Hi!
>
> I need some advices.
> Please, show me, how I can read text file and substitute one string to
> another (e.g. 'christmas card' -> 'money') and save file again to same
> name.
>
> Here is an example C program to read text file lines, but what
> substitute commands should I add to it? Or are there ready functions in
> C++, too?
>
>
> ---
> /* Program read lines from file */
>
> #include <stdio.h>
> #include <stdlib.h>
> #include <process.h>
>
> #define MAXLINELEN 110
>
> int main( int argc, char *argv[] )
> {
>    char filename[85], strline[MAXLINELEN];
>    int line = 0;
>    FILE *fileptr;
>
>    /* Test if given parameter */
>    if ( argc != 2 )
>    {
>       printf( "\nGive data file name : " );
>       gets( filename );
>    }
>    else
>    {
>       /* Copy parameter to filename */
>       strcpy( filename, argv[1] );
>    }
>
>    /* Test if can read file */
>    if ( ( fileptr = fopen( filename, "r" ) ) == NULL )
>    {
>       printf( "\nError: File: %s can't read.\n", filename );
>       exit(0);
>    }
>
>    /* List file */
>    printf( "\nFile: %s list :\n", filename );
>
>    /* Read and list, while not end of file */
>    while ( !feof( fileptr ) )
>    {
>       fgets( strline, MAXLINELEN, fileptr );
>       printf( "%s", strline );
>
>       /* Line counter */
>       line++;
>    }
>
>    /* Close file */
>    fclose( fileptr );
>
>    printf( "\n***  Read: %d rows from file: %s.\n", line, filename );
>
>    return 0;
> }
> ---
>
> Thanks in advance!
>
> Veli Suorsa
> ---
> "People must believe to the future to be able to live!"
> ********************************** J.V.Snellman, 1890.
>
> Oulu, FINLAND
> ***   Suorsa Team Homepage   ***
> Join: http://SuorsaTeam.TopCities.Com/
> Mailto:VSuorsa AT Surfeu DOT Fi
>
>

Use the std::string class.
 - Aaron