txtfile in a charcater array

**Anuradh_a** · 07-09-2008

hi
Is it possible to store a file(say a txt file) in a character array???
thanks

**matsp** · 07-09-2008

Yes, with some restrictions (like, you can't store more than you can possibly fit in memory, for example).

Next you will be asking how you write code to do that, I predict.

--
Mats

**Anuradh_a** · 07-09-2008

yeah. why didn't i ask it in the first post!!!. any link or example will be very help full
i google it . but it didn't give me any good results.
thanks!

**matsp** · 07-09-2008

Well, considering I could probably write the code to do that in about 10 lines (or a lot less if I write it with "compact" style), I presume you are a beginner. Since it's good for a beginner to try things out for him/herself, I suggest you make an attempt, then we can discuss the code once you have written something.

If you are really inexperienced, start by writing something that can just open a file.

[Yes, it probably took me more writing to answer this question than it would to search for such a solution in this forum - but you don't learn how to write code by copying someone elses code, just like you don't become a skilled author by copying another book.]

--
Mats

**Anuradh_a** · 07-09-2008

hey matsp
I did it . This is the only way I can think of. any way here is the code.

the main programm

Code:

#include <stdio.h>
#include "file.h";

int main()
{
FILE *f;

  f=fopen("1.gif","wb");
  fwrite(&bag,sizeof(bag),1,f);
  fclose(f);
  printf("file created successfully\n");

	return 0;
}

file.h header

Code:

// This header file contains the a gif file
char bag[] =
"\x47\x49\x46\x38\x39\x61\x40\x00\x40\x00\xF7\x00\x00\x00\x00\x00\x80\x00"
"\x00\x00\x80\x00\x80\x80\x00\x00\x00\x80\x80\x00\x80\x00\x80\x80\x80\x80"
"\x80\xC0\xC0\xC0\xFF\x00\x00\x00\xFF\x00\xFF\xFF\x00\x00\x00\xFF\xFF\x00"
"\xFF\x00\xFF\xFF\xFF\xFF\xFF\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x33\x00\x00\x66\x00\x00"
"\x99\x00\x00\xCC\x00\x00\xFF\x00\x33\x00\x00\x33\x33\x00\x33\x66\x00\x33"
"\x99\x00\x33\xCC\x00\x33\xFF\x00\x66\x00\x00\x66\x33\x00\x66\x66\x00\x66"
"\x99\x00\x66\xCC\x00\x66\xFF\x00\x99\x00\x00\x99\x33\x00\x99\x66\x00\x99"
"\x99\x00\x99\xCC\x00\x99\xFF\x00\xCC\x00\x00\xCC\x33\x00\xCC\x66\x00\xCC"
"\x99\x00\xCC\xCC\x00\xCC\xFF\x00\xFF\x00\x00\xFF\x33\x00\xFF\x66\x00\xFF"
"\x99\x00\xFF\xCC\x00\xFF\xFF\x33\x00\x00\x33\x00\x33\x33\x00\x66\x33\x00"
"\x99\x33\x00\xCC\x33\x00\xFF\x33\x33\x00\x33\x33\x33\x33\x33\x66\x33\x33"
"\x99\x33\x33\xCC\x33\x33\xFF\x33\x66\x00\x33\x66\x33\x33\x66\x66\x33\x66"
"\x99\x33\x66\xCC\x33\x66\xFF\x33\x99\x00\x33\x99\x33\x33\x99\x66\x33\x99"
"\x99\x33\x99\xCC\x33\x99\xFF\x33\xCC\x00\x33\xCC\x33\x33\xCC\x66\x33\xCC"
"\x99\x33\xCC\xCC\x33\xCC\xFF\x33\xFF\x00\x33\xFF\x33\x33\xFF\x66\x33\xFF"
"\x99\x33\xFF\xCC\x33\xFF\xFF\x66\x00\x00\x66\x00\x33\x66\x00\x66\x66\x00"
"\x99\x66\x00\xCC\x66\x00\xFF\x66\x33\x00\x66\x33\x33\x66\x33\x66\x66\x33"
"\x99\x66\x33\xCC\x66\x33\xFF\x66\x66\x00\x66\x66\x33\x66\x66\x66\x66\x66"
"\x99\x66\x66\xCC\x66\x66\xFF\x66\x99\x00\x66\x99\x33\x66\x99\x66\x66\x99"
"\x99\x66\x99\xCC\x66\x99\xFF\x66\xCC\x00\x66\xCC\x33\x66\xCC\x66\x66\xCC"
"\x99\x66\xCC\xCC\x66\xCC\xFF\x66\xFF\x00\x66\xFF\x33\x66\xFF\x66\x66\xFF"
"\x99\x66\xFF\xCC\x66\xFF\xFF\x99\x00\x00\x99\x00\x33\x99\x00\x66\x99\x00"
"\x99\x99\x00\xCC\x99\x00\xFF\x99\x33\x00\x99\x33\x33\x99\x33\x66\x99\x33"
"\x99\x99\x33\xCC\x99\x33\xFF\x99\x66\x00\x99\x66\x33\x99\x66\x66\x99\x66"
"\x99\x99\x66\xCC\x99\x66\xFF\x99\x99\x00\x99\x99\x33\x99\x99\x66\x99\x99"
"\x99\x99\x99\xCC\x99\x99\xFF\x99\xCC\x00\x99\xCC\x33\x99\xCC\x66\x99\xCC"
"\x99\x99\xCC\xCC\x99\xCC\xFF\x99\xFF\x00\x99\xFF\x33\x99\xFF\x66\x99\xFF"
"\x99\x99\xFF\xCC\x99\xFF\xFF\xCC\x00\x00\xCC\x00\x33\xCC\x00\x66\xCC\x00"
"\x99\xCC\x00\xCC\xCC\x00\xFF\xCC\x33\x00\xCC\x33\x33\xCC\x33\x66\xCC\x33"
"\x99\xCC\x33\xCC\xCC\x33\xFF\xCC\x66\x00\xCC\x66\x33\xCC\x66\x66\xCC\x66"
"\x99\xCC\x66\xCC\xCC\x66\xFF\xCC\x99\x00\xCC\x99\x33\xCC\x99\x66\xCC\x99"
"\x99\xCC\x99\xCC\xCC\x99\xFF\xCC\xCC\x00\xCC\xCC\x33\xCC\xCC\x66\xCC\xCC"
"\x99\xCC\xCC\xCC\xCC\xCC\xFF\xCC\xFF\x00\xCC\xFF\x33\xCC\xFF\x66\xCC\xFF"
"\x99\xCC\xFF\xCC\xCC\xFF\xFF\xFF\x00\x00\xFF\x00\x33\xFF\x00\x66\xFF\x00"
"\x99\xFF\x00\xCC\xFF\x00\xFF\xFF\x33\x00\xFF\x33\x33\xFF\x33\x66\xFF\x33"
"\x99\xFF\x33\xCC\xFF\x33\xFF\xFF\x66\x00\xFF\x66\x33\xFF\x66\x66\xFF\x66"
"\x99\xFF\x66\xCC\xFF\x66\xFF\xFF\x99\x00\xFF\x99\x33\xFF\x99\x66\xFF\x99"
"\x99\xFF\x99\xCC\xFF\x99\xFF\xFF\xCC\x00\xFF\xCC\x33\xFF\xCC\x66\xFF\xCC"
"\x99\xFF\xCC\xCC\xFF\xCC\xFF\xFF\xFF\x00\xFF\xFF\x33\xFF\xFF\x66\xFF\xFF"
"\x99\xFF\xFF\xCC\xFF\xFF\xFF\x21\xF9\x04\x01\x00\x00\x10\x00\x2C\x00\x00"
"\x00\x00\x40\x00\x40\x00\x00\x08\xFF\x00\xFF\x09\x1C\x48\xB0\xA0\xC1\x83"
"\x08\x13\x2A\x5C\xC8\xB0\xA1\xC3\x87\x10\x23\x4A\x9C\x48\xB1\xA2\xC5\x8B"
"\x18\x33\x6A\xDC\xC8\xB1\xA3\xC7\x8F\x20\x43\x8A\x1C\x49\xF2\xE2\x94\x29"
"\x25\x31\x9E\x44\x99\xD2\xE2\x4A\x96\x2D\x25\xAE\x7C\x01\xD3\x65\xC8\x97"
"\x35\x2B\x9E\xFC\xB8\xB2\xCF\x4E\x95\x39\x33\xAE\xF4\xE3\x33\xE8\xC4\x29"
"\x34\x39\x9E\x7C\xE1\xD3\xCF\x4F\x93\x2B\x35\x0E\xED\xD3\xE7\xCE\x53\x97"
"\x4B\x8D\x42\x44\xD1\x73\x8A\x55\xA7\x5A\x23\x4E\xF1\xE3\x47\xCB\x55\x88"
"\x7E\xA8\x4C\x6D\x5A\x54\xE8\x14\x54\x4E\x69\x86\x3D\xF8\x32\xCB\xD8\x29"
"\x3E\xBF\x9E\xA5\x38\xD6\x0F\x5C\x54\x53\xCC\xC2\x4C\x45\x98\x50\x2A\x54"
"\xA9\x70\x9E\x24\xEB\xE7\x4E\x53\xBC\x77\xEC\x0A\xF5\x93\x8A\x32\x62\xB2"
"\x43\x29\xA7\xA2\x46\x18\xF3\xE2\x3E\x8D\x7D\xE6\xC5\x4B\x7A\xAE\x43\xA7"
"\x84\x09\x72\x4E\x4C\x98\x1A\xB5\x81\xFE\x56\xFB\x25\x0B\x1A\xF4\x9D\xD0"
"\x63\xDB\x6E\x45\x51\x50\x73\xEC\x81\xAE\x29\xFB\x71\xFD\xEF\xB5\x71\x6A"
"\xB4\x9D\x56\x55\x4E\x5A\xAF\xE9\x81\x28\xA2\x4B\x8F\x2E\x30\x15\xA1\xDF"
"\xAE\xC7\x4E\xA3\x86\x8A\xB8\xBF\xE2\x95\x5D\x73\xFF\x27\x4A\xFE\xB6\xE3"
"\xBB\x8D\xF7\x22\x94\xAE\x76\xCA\x74\xCA\xAE\xA7\x41\x47\x41\x78\xBB\x71"
"\x81\x7E\x50\x68\x76\x7C\x9B\xB4\x68\xFF\xEA\x19\x14\xDD\x70\x9C\x61\x16"
"\x5D\x6B\x9C\x0D\x94\x1F\x82\xC5\x01\xE7\x1E\x35\x84\xA0\x52\x5B\x79\x8D"
"\x39\x45\x54\x80\x05\x71\x95\xCA\x40\x85\xDC\x75\xE0\x76\x53\x6C\x96\x98"
"\x7E\x9B\x05\x37\xD0\x88\xC2\x85\xD6\xDF\x7F\x4D\x25\xB5\xD0\x80\xAF\x09"
"\x44\x8D\x59\x4E\x71\xE5\x5A\x2A\x5C\x9D\x44\x5F\x89\xD4\x8C\x45\x98\x8E"
"\xB3\x4D\x68\x9E\x85\x77\x61\x38\x9F\x16\x31\x16\xF7\x12\x8C\x23\x46\xE7"
"\xE3\x66\xD3\xE0\xB8\x52\x74\x88\xF1\xC7\x1C\x8B\x51\x31\x34\xE0\x86\xF8"
"\x81\xA5\x63\x88\x37\x86\xD8\x59\x2A\xDB\x4D\xE3\x9E\x7B\x1A\x26\x27\x24"
"\x6E\x60\x39\xC4\x15\x59\xC8\x09\x26\x97\x7B\x95\xD5\xE9\x57\x1F\xA2\x68"
"\xB6\xDA\x58\x97\x91\x07\xD9\x95\xA5\x3D\x27\xD0\x9B\x8B\x05\x96\x55\x74"
"\x7D\xC0\x55\xD9\x5F\xB3\xD5\x47\x66\x67\xA2\x4C\x68\x1B\x9B\xA0\x19\x49"
"\x90\x93\x2F\xD1\xC4\xD5\xA6\x8E\x91\x27\x29\x59\x76\x4A\xE8\x27\x96\xA3"
"\xB5\xF9\xD0\x80\x8A\x6D\xCA\x55\x9E\x91\xC2\xD5\xAA\x1F\x91\xE6\xFF\xE9"
"\xA9\x72\x9F\x8E\x65\x9E\xA5\x19\x3A\xB9\xA9\x7B\x2F\x6C\x4A\xD5\xAC\x9F"
"\x7E\x7A\x9E\x14\x00\xFE\x37\x25\x6F\x6E\x3A\xA9\xE9\x99\x88\x02\x1B\x29"
"\xB0\xC0\xA2\x89\x1E\x69\x60\x4D\x77\xAA\xAE\xD8\xEA\xE7\xD8\xA4\xDC\x56"
"\xB8\xA2\x74\x4C\x38\x89\x25\x9A\xD6\x26\xBB\xAB\x74\xD0\x06\x4B\x54\x51"
"\xD2\x85\x62\xC7\xBB\x55\x35\x65\x15\xB9\xE5\x36\x34\x1D\xBA\x6B\x76\xEB"
"\xD5\x49\x4C\x30\x2B\x85\x1D\xA0\x10\x03\xCA\xBB\x76\xCC\xDB\xEB\xBD\xD4"
"\x5D\x2B\xDD\x62\xB0\xAA\x09\xED\x8A\xB6\xF6\x61\x47\x28\xA0\x2C\x43\x8C"
"\xBB\x76\x10\x8B\x70\xC2\xE6\x4A\x37\x67\x79\x58\x02\xFA\xDF\x1D\x04\x13"
"\x43\xCC\x3B\x9A\x10\xAC\xAA\x74\xBB\x21\x9C\xC2\x49\x59\xDC\x21\x6B\xBE"
"\xDE\x5A\xC8\x9F\xC4\x14\x5B\x5C\x8C\x1D\xB6\xD5\xDB\xF1\xBD\x67\xDA\x3A"
"\x6A\xB1\xD4\x36\x57\x72\xC0\x7D\x74\xC6\x72\xCB\x1B\x63\x5A\xE8\xC3\x7E"
"\x56\x2B\xC5\xBF\x13\x87\xB2\xD9\x3F\x9D\x4D\xD4\x34\xC2\x53\xBC\x8C\x53"
"\x51\x59\x69\x3A\x1D\xBC\x04\x82\xE7\x25\xB2\x3F\x6F\x9D\xA3\x62\xC7\x6E"
"\xCC\x84\x66\x57\x23\xB7\x59\x8D\x4C\xAB\x6D\xB7\xDA\x74\xA6\x28\x66\x62"
"\x82\xE6\x35\x7A\xF7\xDF\x1B\x2B\x98\x18\x63\x45\x52\x04\x38\xE0\x08\x15"
"\x3A\x25\x46\x87\xDF\xCB\xD0\xB4\x67\xC6\x24\xD6\x94\x68\x4A\x3E\x39\xB9"
"\x96\x4B\xE4\x73\xE6\x0A\x73\xEE\xF9\xE7\xA0\x87\x2E\xFA\xE8\xA4\x97\x1E"
"\x51\x40\x00\x3B";

To format the above character array I wrote this utility

Code:

#include <stdio.h>

int main()
{
FILE *f,*a;
char name[10];
char bag[1000000];
int i=1;

printf("Please enter the file name : ");
scanf("%s",&name);


f =fopen(name,"r");
a=fopen("array.txt","w");

while((bag[i]=fgetc(f))!=EOF)
{
if(i%2==0)
{
fprintf(a,"\\x%c%c",bag[i-1],bag[i]);
}
i++;	
}
fclose(a);
fclose(f);
	return 0;
}

the main program will extract a gif image.
also i get this warning

Code:

warning C4067: unexpected tokens following preprocessor directive - expected a newline

how to correct this warning??
matsp is there other ways to do this????
thanks

**Salem** · 07-09-2008

You have a ; at the end of your #include

**Anuradh_a** · 07-09-2008

thanks salem i didn't notice that.

**Anuradh_a** · 07-10-2008

hey guys
I'm getting this error when i use a bigger file(about 500kb) any idea on this???

Code:

fatal error C1076: compiler limit : internal heap limit reached; use /Zm to specify a higher limit
Error executing cl.exe.

thanks

**Adak** · 07-10-2008

You current compiler settings do not allow for the largest heap size to be used. The compiler says to use the " /Zm" flag to enable a bigger heap size.

You may need to read up on your compiler options, perhaps in a help file?

**matsp** · 07-10-2008

Originally Posted by Anuradh_a

hey guys
I'm getting this error when i use a bigger file(about 500kb) any idea on this???

Code:

fatal error C1076: compiler limit : internal heap limit reached; use /Zm to specify a higher limit
Error executing cl.exe.

thanks

Well, the real question would be: Why do you want to do something like this?

--
Mats

**Anuradh_a** · 07-10-2008

thanks for the reply.
I'm using VC++ 6.0
when I add this /Zm Option to the project->settings->c/c++tab it says that it needs an argument

Code:

Command line error D2004 : '/Zm' requires an argument

what is this argument???

**matsp** · 07-10-2008

Try this page:
http://msdn.microsoft.com/en-us/libr...1c(VS.80).aspx

It seems like the "unit" is one half-megabyte.

I still would like to know what you are actually trying to achieve? Embedding HUGE data blocks in your application that are then made into external files seems a bit strange to me. Would it not be better to distribute the application together with the relevant file(s)?

Edit: For Visual Studio 6, you want this page:
http://msdn.microsoft.com/en-us/libr...80(VS.60).aspx

--
Mats

**Anuradh_a** · 07-10-2008

I still would like to know what you are actually trying to achieve? Embedding HUGE data blocks in your application that are then made into external files seems a bit strange to me

Okay I know that same thing can be done using resource right. but in resources there are no size limitation to the file that stores (as far as I know). one of my friend told me that it could be done by using a character array. so I'm just checking what is the best method.
"about the big files " I need to store a mp3 file . so when some one click on it , it will extract the mp3 and play it, so I can use this in a screen savor.

**zacs7** · 07-10-2008

Take a gander how NSIS does it, http://nsis.sourceforge.net/Main_Page

It's opensource and all.

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