static_cast<double> 和 double 一样吗？
are static_cast<double> and double the same?
我是 C++ 转换的初学者。
我需要知道 static_cast<double> 和 double 是否可以在任何代码中交换？
在下面的代码中，我可以将static_cast<double>替换为double吗？这要短得多。我会失去任何可读性吗？
a= static_cast<double> ( 3 ) / static_cast<double>( 7 );
其他基本类型如int、char、size_t如何static_cast？
根据解释他们一定是一样的。但是有没有特例呢？
刚看完When should static_cast, dynamic_cast, const_cast and reinterpret_cast be used?
C++11 标准草案调用 T(number) 函数符号和 (T) number 强制转换符号。鉴于表达式列表是单个表达式，它们是等价的：
§5.2.3/1 A simple-type-specifier (7.1.6.2) or typename-specifier
(14.6) followed by a parenthesized expression-list constructs a value
of the specified type given the expression list. If the expression
list is a single expression, the type conversion expression is
equivalent (in definedness, and if defined in meaning) to the
corresponding cast expression (5.4). [...]
(T) number 可以调用 static_cast，在这种情况下具有以下行为：
§5.2.9/4 Otherwise, an expression e can be explicitly converted to a
type T using a static_cast of the form static_cast<T>(e) if the
declaration T t(e); is well-formed, for some invented temporary
variable t (8.5). The effect of such an explicit conversion is the
same as performing the declaration and initialization and then using
the temporary variable as the result of the conversion. The expression
e is used as a glvalue if and only if the initialization uses it as
a glvalue.
您可以节省大量的输入，而只需使用浮动文字（其类型为 double）。
a = 3.0 / 7.0;
我是 C++ 转换的初学者。
我需要知道 static_cast<double> 和 double 是否可以在任何代码中交换？
在下面的代码中，我可以将static_cast<double>替换为double吗？这要短得多。我会失去任何可读性吗？
a= static_cast<double> ( 3 ) / static_cast<double>( 7 );
其他基本类型如int、char、size_t如何static_cast？
根据解释他们一定是一样的。但是有没有特例呢？
刚看完When should static_cast, dynamic_cast, const_cast and reinterpret_cast be used?
C++11 标准草案调用 T(number) 函数符号和 (T) number 强制转换符号。鉴于表达式列表是单个表达式，它们是等价的：
§5.2.3/1 A simple-type-specifier (7.1.6.2) or typename-specifier (14.6) followed by a parenthesized expression-list constructs a value of the specified type given the expression list. If the expression list is a single expression, the type conversion expression is equivalent (in definedness, and if defined in meaning) to the corresponding cast expression (5.4). [...]
(T) number 可以调用 static_cast，在这种情况下具有以下行为：
§5.2.9/4 Otherwise, an expression e can be explicitly converted to a type
Tusing astatic_castof the formstatic_cast<T>(e)if the declarationT t(e);is well-formed, for some invented temporary variablet(8.5). The effect of such an explicit conversion is the same as performing the declaration and initialization and then using the temporary variable as the result of the conversion. The expressioneis used as a glvalue if and only if the initialization uses it as a glvalue.
您可以节省大量的输入，而只需使用浮动文字（其类型为 double）。
a = 3.0 / 7.0;