Thread: A method to deleted a substring from a string

Hello, I am trying to delete a substring from a string. I am trying to use pointers and return the value where the substring occurrence is found. But I am lost. Here is what I have so far ----

Code:

int delete_substring(char *str, char *substr)
{
  int i;
  char *position = strstr(str, substr);
  if (!position)
    return -1;
  return position - str;
}