How to use dll file in program?

Question

I have following program to search string from given text string. I created the dll file using VS2010 now how can I use it in some program?

Please give small example:

code:

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

char *BoyerMoore( unsigned char *data, unsigned int dataLength, unsigned char *string, unsigned int strLength )
{
    unsigned int skipTable[256], i;
    unsigned char *search;
    register unsigned char lastChar;

    if (strLength == 0)
	return NULL;

    // Initialize skip lookup table
    for (i = 0; i < 256; i++)
	skipTable[i] = strLength;

    search = string;

    // Decrease strLength here to make it an index
    i = --strLength;

    do
    {
	skipTable[*search++] = i;
    } while (i--);

    lastChar = *--search;

    // Start searching, position pointer at possible end of string.
    search = data + strLength;
    dataLength -= strLength+(strLength-1);

    while ((int)dataLength > 0 )
    {
	unsigned int skip;

	skip = skipTable[*search];
	search += skip;
	dataLength -= skip;
	skip = skipTable[*search];
	search += skip;
	dataLength -= skip;
	skip = skipTable[*search];

	if (*search != lastChar) /*if (skip > 0)*/
	{
	    // Character does not match, realign string and try again
	    search += skip;
	    dataLength -= skip;
	    continue;
	}

	// We had a match, we could be at the end of the string
	i = strLength;

	do
	{
	    // Have we found the entire string?
	    if (i-- == 0)
		return search;
	} while (*--search == string[i]);

	// Skip past the part of the string that we scanned already
	search += (strLength - i + 1);
	dataLength--;
    }

    // We reached the end of the data, and didn't find the string
    return NULL;
}
void chomp(char *s) {
    int n = strlen(s);
    while (n && (s[n-1]==10 || s[n-1]==13)) s[--n] = 0;
}
int main(void)
{
    char target[200];
	char *ch = target,*str;
	char pattern[20];
	int i,k,count,l;
	chomp(target);
	chomp(pattern);
	str = BoyerMoore( target, strlen(target), pattern, strlen(pattern) );
	printf("Enter the string: \n");
	fgets(target,100,stdin);
	//scanf ("%[^\n]%*c", target);
	printf("Enter the string to be matched: \n");
	fgets(pattern,20,stdin);
	//scanf ("%[^\n]%*c", pattern);


    if (str == NULL)
	puts( "String not found" );
    else
	puts( "true" );
    getch();
    return 0;
}

Answer 1

(Hope I understand your question correctly)

A link on using dlls in visual studio...

http://msdn.microsoft.com/en-us/library/1ez7dh12.aspx

Also few obvious things...

1. If its a dll you shouldn't be having 'main' function its only used as an executable file's entry point. Instead for a dll you should be having DllMain.

http://msdn.microsoft.com/en-us/library/windows/desktop/ms682583(v=vs.85).aspx

2. If its a dll ideally the BoyerMoore should be exported. Checkout _declspec(dllexport)...

http://msdn.microsoft.com/en-us/library/a90k134d(v=vs.100).aspx

Nibu

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Answer 2

I think you have knowledge about programing. If you want to develop your programing skills follow some tutorials about programing.