Numeric conversions

	Str::ToInt Str::ToFloat Str::ToDouble
	int ToInt (BOOL* error = NULL) const float ToFloat (BOOL* error = NULL) const double ToDouble (BOOL* error = NULL) const

These three methods are used when the string must be converted to a number.

The result of the conversion is returned as a result from the method.  If an error occurs, the behavior is as follows:

• If error == NULL (the default), a StrException is thrown with an error code of SE_BadNumber
• If error is not NULL, TRUE is stored in the boolean variable. Otherwise (i.e. successful conversion) its value will be FALSE.

The rules for the actual number conversion are the same as those of the strtol and strtod C RTL functions.

Example:

   Str s ("42.80");
   BOOL error;
   double v = s.ToDouble(&error);
   ASSERT(v == 42.80);
   ASSERT(error == FALSE);

STR_NO_RTLIBRARY compatibility note If STR_NO_RTLIBRARY is defined, your program cannot use floating point numbers. ToFloat and ToDouble will not be available at all.

See also: Basic operations