C++ Language Implementation quantities

— Nesting levels of compound statements, iteration control structures, and selection control structures [256].
— Nesting levels of conditional inclusion [256]. 
— Pointer, array, and function declarators (in any combination) modifying an arithmetic, structure, union, or incomplete type in a declaration [256]. 
— Nesting levels of parenthesized expressions within a full expression [256]. 
— Number of characters in an internal identifier or macro name [1 024]. 
— Number of characters in an external identifier [1 024]. 
— External identifiers in one translation unit [65 536]. 
— Identifiers with block scope declared in one block [1 024]. 
— Macro identifiers simultaneously defined in one translation unit [65 536]. 
— Parameters in one function definition [256].
— Arguments in one function call [256]. 
— Parameters in one macro definition [256]. 
— Arguments in one macro invocation [256]. 
— Characters in one logical source line [65 536]. 
— Characters in a character string literal or wide string literal (after concatenation) [65 536]. 
— Size of an object [262 144]. 
— Nesting levels for #include files [256]. 
— Case labels for a switch statement (excluding those for any nested switch statements) [16 384]. 
— Data members in a single class, structure, or union [16 384].
— Enumeration constants in a single enumeration [4 096]. 
— Levels of nested class, structure, or union definitions in a single struct-declaration-list [256]. 
— Functions registered by atexit()[32]. 
— Direct and indirect base classes [16 384]. 
— Direct base classes for a single class [1024]. 
— Members declared in a single class [4 096].
— Final overriding virtual functions in a class, accessible or not [16 384]. 
— Direct and indirect virtual bases of a class [1 024]. 
— Static members of a class [1 024]. 
— Friend declarations in a class [4 096]. 
— Access control declarations in a class [4 096]. 
— Member initializers in a constructor definition [6 144]. 
— Scope qualifications of one identifier [256]. 
— Nested external specifications [1 024]. 
— Template arguments in a template declaration [1 024]. 
— Recursively nested template instantiations [17]. 
— Handlers per try block [256]. 
— Throw specifications on a single function declaration [256].



Blog Author: Vijay Kumar

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