Synopsis
double atof(const char *nptr);
Description

atof converts the initial portion of the string pointed to by nptr to a double representation. atof does not affect the value of errno on an error. If the value of the result cannot be represented, the behavior is undefined.

Except for the behavior on error, atof is equivalent to strtod(nptr, (char **)NULL).

atof returns the converted value.

See Also

strtod