stof
Converts a character sequence to a float.
float stof(
const string& _Str,
size_t *_Idx = 0
);
float stof(
const wstring& _Str,
size_t *_Idx = 0
);
Parameters
Parameter |
Description |
|---|---|
_Str |
The character sequence to be converted. |
_Idx |
The index value of the first unconverted character. |
Return Value
The float value.
Remarks
The function converts the sequence of elements in _Str to a value _Val of type float as if by calling strtof(_Str.c_str(), _Eptr), where _Eptr is an object internal to the function. If _Str.c_str() == *_Eptr it throws an object of type invalid_argument. If such a call would set errno, it throws an object of type out_of_range. Otherwise, if _Idx is not a null pointer, the function stores *_Eptr - _Str.c_str() in *_Idx and returns _Val.
Requirements
Header: <string>
Namespace: std