空声明(Empty declaration) 块声明(Block declaration)(【注】块声明指可以出现在块中的声明)。它们可以是以下的声明: asm definition type alias declaration namespace alias definition using declaration using directive static assert declaration opaque enum declaration 简单声明(simple declaration) 简单声明是一条引...
在C语言中,声明(Declaration)这个词的本义就是指定标识符的意义和性质(A declaration specifies the interpretation and attributes of a set of identifiers.),某个标识符的定义(Definition)同时也是这个标志符的“声明”(Declaration)。函数定义(Function definition)则意指包括函数体。(A definition of an identifier ...
在C语言中,声明(Declaration)这个词的本义就是指定标识符的意义和性质(A declaration specifies the interpretation and attributes of a set of identifiers.),某个标识符的定义(Definition)同时也是这个标志符的“声明”(Declaration)。函数定义(Function definition)则意指包括函数体。(A definition of an identifier ...
type-specifier declaration-specifiersopt type-qualifier declaration-specifiersopt function-specifier declaration-specifiersopt alignment-specifier declaration-specifiersopt 声明指示 包含 存储指定 (storage-class) 类型指定(type specifier ) 类型修饰(type qualifier) 函数指定(function specifier) 对齐指定 (alignment sp...
Declaration:the function's name, return type, and parameters (if any) Definition:the body of the function (code to be executed) voidmyFunction(){//declaration // the body of the function (definition) } For code optimization, it is recommended to separate the declaration and the definition ...
所谓声明(Declaration),就是告诉编译器我要使用这个函数,你现在没有找到它的定义不要紧,请不要报错,稍后我会把定义补上。 函数声明的格式非常简单,相当于去掉函数定义中的函数体,并在最后加上分号;,如下所示: dataType functionName( dataType1 param1, dataType2 param2 ... ); ...
function-definition? declaration-specifiersoptattribute-seqoptdeclaratordeclaration-listoptcompound-statement /*attribute-seq为 Microsoft 专用 */ 原型参数为: declaration-specifiers? storage-class-specifierdeclaration-specifiersopt type-specifierdeclaration-specifiersopt ...
7．2．4 Function Declaration 7．3 Nested Calling of AFunction 7．4 Recursive Call 7．5 Array as a Function Parameter 7．6 Scope and Storage Type of the Variable 7．6．1 Scope of the Variable 7．6．2 Storage Type of the Variable 7．7 Internal and External Functions 7．7．1 Internal ...
Function declaration. Function definition: The function definition contains single or groups of statements that perform specific tasks. The function definition can be categorized into two parts function header and the function body. Let’s see the general syntax of the function definition. ...
/* local variable declaration */ int result; if (num1 > num2) result = num1; else result = num2; return result; } 功能声明 函数声明告诉编译器函数名称以及如何调用函数。函数的实际主体可以单独定义。 功能声明包含以下部分 : return_type function_name( parameter list ); ...