/* Make a function substring() to extract a
portion of a charcter string.
subtring("charcter", 4, 3, result)
extract 3 charters begining from charter 4, and put the
result in array result*/

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

void substring( char string[], int string_start, int string_lenght, char result[]  )
{
	int i = 0, j = 0;
	int count;
	char final_result[81];
	char null_zero[] = {"\0"};




		 count = string_start + string_lenght;

		 if( string[i] <= string_lenght)
		 {
		 	string_start = 0;
		 	i = string_start;
		 	++i;

		 	result[i] = string[i];
		 }

 		else
 		{
			for(j = string_start   ; j < count + 1; ++j, ++i)
		 	{

				 result[i] = string[j];

			 }
		}

		 strcat(result, null_zero);










		// return result;
}

int main(void)
{
	char word[] = {"character"};
	char result[81];
	int a = 4;
	int b = 20;

	 substring(  word  , a  ,  b,  result);
	 printf("%s\n", result);



	return 0;
}