Extracts a string between the start index and end index

char* function_substr_index(char* source,int begin, int end)
{


 int length = end-begin;
 char* newstring;
 char* tmpstring;
int i, len;
 len = strlen(source);
 if(end>len)
 {
  lr_output_message("ERROR:Verify right bound index");
  return("-1");
 }
    if(length<=0)
 {
  lr_output_message("ERROR: Enter start and end index value to extract atleast 1 character");
  return("-1");

 }
 newstring = (char*)malloc(length+1);
 memset(newstring,'\0',length+1);
 tmpstring = (char*)strdup(source);
 for(i=1;i<begin;i++)
 {
  tmpstring++;
 }

 strncpy(newstring,tmpstring,length);
 lr_output_message("Substring is ::>%s",newstring);
 return newstring;

}