Extracts a string between the start index and end of string

char* function_substr_lb_index(char* src,int startIndex)
{
 char* buffer;
 char* temp;
 int cnt;
 int length = strlen(src);
 if(length<0)
 {
  return("-1");
 }
 buffer = (char*)malloc(length+1);
 memset(buffer,'\0',length+1);
 temp = (char*)strdup(src);
 for(cnt=1;cnt<startIndex;cnt++)
 {
  temp++;
 }
 strncpy(buffer,temp,length);
 lr_output_message("Substring from left boundary is ::>%s",buffer);
 return buffer;
}