help - string copy from character position 0 to a designated character position

these function are called from main - I am just trying to copy string st1 to string st2 from character position 0 to character position unsigned int to (3 as in this example) but I can't figure out where to stop the increment in order to stop at the unsigned int to.....

any help would be appreciated....

Code:

void g_strtcpy()
{
	char ST1[30]="abcdefg";
	char ST2[30]="";
	


	/*Example 1*/
	printf("\n\n strtcpy() function demonstration #1:");
	printf("\n Input string is =%s= ",ST1);
	printf("\n Output string is =%s= ",ST2);
	printf("\n Copy to character position 3");

	strtcpy(ST2,ST1,3);

	printf("\n\n Input string is =%s= ",ST1);
	printf("\n Output string is =%s= ",ST2);
	printf("\n\n");

}
void strtcpy(char *outstring, char *instring, unsigned int to)
{
	int i=0;
	int j=0;
	int k=to-1;
	
	if (k<=-1)
		{
			outstring[0]=EOS;
			
		}

	else if (k>=0)
		{	
		
			while (instring[j]!=EOS)
			{	
				outstring[i]=instring[j];				++i;
				++j;
				

			}
			
			outstring[i]=EOS;
		}
	
	
}

[code][/code]tagged by Salem

Code:

void CopyString(char* Destination, char* Source, int Length)
{
   for(int i=0; i<Length; i++)
   {
      Destination[i] = Source[i];
   }
   Destination[Length] = '\0';
}

Of course, this assumes that the destination buffer is large enough and that length isn't larger than the size of the source string.

Thank you both for replying...especially so quickly...

your info was greatly appreciated and I will try it just as soon as I can.

Thanks again

Here's a novel idea: strncpy

Quzah.