File Parsing Hell

OK here's the problem. I have a file that's name "responses.txt" and it looks like this:

1:blaggh:blaggh to you
2:poo:you said sompin with poo in it
3:crap:you said crap sompin

i.e. number:1st string:2nd string

This isn't what it's going to look like in the end, but this is just my test. Now, in the code there are three variables: firstnum, whatsaid, and saydis. This part of the program needs to do something like this.

-Open responses.txt
-Start a loop until the end of the file
--Read the first/next line
--Put the number into firstnum
--Put the 1st string into whatsaid
--Put the 2nd string into saydis
--Do some stuff based on what the variables are (i already have this...don't need help for it
-Continue Loop
-Close responses.txt

So if you know how, please help me out.

hmm... call strtok?
you would load a line into a buffer using fgets() and then parse it using strtok();

strtok? never heard of it.

strtok, wcstok, _mbstok
Find the next token in a string.

char *strtok( char *strToken, const char *strDelimit );

wchar_t *wcstok( wchar_t *strToken, const wchar_t *strDelimit );

unsigned char *_mbstok( unsigned char*strToken, const unsigned char *strDelimit );

Routine Required Header Compatibility
strtok <string.h> ANSI, Win 95, Win NT
wcstok <string.h> or <wchar.h> ANSI, Win 95, Win NT
_mbstok <mbstring.h> Win 95, Win NT


For additional compatibility information, see Compatibility in the Introduction.

Libraries

LIBC.LIB Single thread static library, retail version
LIBCMT.LIB Multithread static library, retail version
MSVCRT.LIB Import library for MSVCRT.DLL, retail version


Return Value

All of these functions return a pointer to the next token found in strToken. They return NULL when no more tokens are found. Each call modifies strToken by substituting a NULL character for each delimiter that is encountered.

Parameters

strToken

String containing token(s)

strDelimit

Set of delimiter characters

Remarks

The strtok function finds the next token in strToken. The set of characters in strDelimit specifies possible delimiters of the token to be found in strToken on the current call. wcstok and _mbstok are wide-character and multibyte-character versions of strtok. The arguments and return value of wcstok are wide-character strings; those of _mbstok are multibyte-character strings. These three functions behave identically otherwise.

Generic-Text Routine Mappings

TCHAR.H Routine _UNICODE & _MBCS Not Defined _MBCS Defined _UNICODE Defined
_tcstok strtok _mbstok wcstok


On the first call to strtok, the function skips leading delimiters and returns a pointer to the first token in strToken, terminating the token with a null character. More tokens can be broken out of the remainder of strToken by a series of calls to strtok. Each call to strtok modifies strToken by inserting a null character after the token returned by that call. To read the next token from strToken, call strtok with a NULL value for the strToken argument. The NULL strToken argument causes strtok to search for the next token in the modified strToken. The strDelimit argument can take any value from one call to the next so that the set of delimiters may vary.

Warning Each of these functions uses a static variable for parsing the string into tokens. If multiple or simultaneous calls are made to the same function, a high potential for data corruption and inaccurate results exists. Therefore, do not attempt to call the same function simultaneously for different strings and be aware of calling one of these function from within a loop where another routine may be called that uses the same function. However, calling this function simultaneously from multiple threads does not have undesirable effects.

Example

/* STRTOK.C: In this program, a loop uses strtok
* to print all the tokens (separated by commas
* or blanks) in the string named "string".
*/

#include <string.h>
#include <stdio.h>

char string[] = "A string\tof ,,tokens\nand some more tokens";
char seps[] = " ,\t\n";
char *token;

void main( void )
{
printf( "%s\n\nTokens:\n", string );
/* Establish string and get the first token: */
token = strtok( string, seps );
while( token != NULL )
{
/* While there are tokens in "string" */
printf( " %s\n", token );
/* Get next token: */
token = strtok( NULL, seps );
}
}


Output

A string of ,,tokens
and some more tokens

Tokens:
A
string
of
tokens
and
some
more
tokens

The delimiter in your case would be ":"

Thank you very much. It works!
:D :) :D :)