string::find
Find the first occurrence of characters within the string.
Synopsis
std::size_t
find(
    string_view sv,
    std::size_t pos = 0) const noexcept; (1)
std::size_t
find(
    char ch,
    std::size_t pos = 0) const noexcept; (2)
Description
Search from pos onward for the first substring that is equal to the first argument.
- 
(1) searches for the presense of the substring equal to
sv. - 
(2) searches for the presense of the substring consisting of the character
ch. 
Complexity
Linear in size().
Exception Safety
No-throw guarantee.
Return Value
The index of the first character of the found substring, or npos if none was found.
Parameters
| Name | Description | 
|---|---|
  | 
The   | 
  | 
The index to start searching at.  | 
  | 
The character to search for.  |