The effect of attempting to modify a string literal object is undefined. boolb="bar"==3+"foobar";// can be true or false, unspecifiedconstchar*pc="Hello";char*p=const_cast<char*>(pc);p[0]='M';// undefined behav
4)32-bit wide string literal: The type of the literal ischar32_t[N], whereNis the size of the string in code units of implementation-defined 32-bit encoding (typically UTF-32), including the null terminator. Eachchar32_telement in the array is initialized as if by executingmbrtoc32in...
If the size of the array is known, it may be one less than the size of the string literal, in which case the terminating null character is ignored: charstr[3]="abc";// str has type char[3] and holds 'a', 'b', 'c'
string-literalud-suffix(8) 1-4)user-defined integer literals, such as12_km 5-6)user-defined floating-point literals, such as0.5_Pa 7)user-defined character literal, such as'c'_X 8)user-defined string literal, such as"abd"_Loru"xyz"_M ...
a string literal, such as "Hello, world!"; (特别注意,C++规定字符串是左值) a cast expression to lvalue reference type, such as static_cast<int&>(x); a function call or an overloaded operator expression of rvalue reference to function return type; ...
每一个C++表达式(带有运算对象[operand]的运算符、字面值[literal]、变量名等)都是由两个独立的属性(properties) ——— 型别[type]和值类型[value categories] ——— 来描述[characterized]的。每一个表达式都有某些非引用类型[non-reference type],并且每一个表达式都明确地属于下面三种基本值类型之一。 基本类...
literalAssert memorymodel_atomic obj reference BUILD collapses.cpp forward.cpp lifetime.cpp ref.cpp reference.cpp shape.h smart_ptr practical_exercises proj src_analysis tool .gitignore README.md README_EN.md WORKSPACE Breadcrumbs CPlusPlusThings /learn_class /modern_cpp_30 /reference / lifetime....
A newer version of this document is available. Customers should click here to go to the newest version.Intel® C++ Compiler Classic Developer Guide and Reference Intel® C++ Compiler Classic Introduction Compiler Setup Compiler Reference C/C++ Calling Conventions Compiler Options ...
原位构造指定字符数组类型的无名对象,在需要内嵌字符串到源代码中时使用。 语法 "串字符序列"(1) u8"串字符序列"(2)(C11 起) u"串字符序列"(3)(C11 起) U"串字符序列"(4)(C11 起) L"串字符序列"(5) 其中 串字符序列-零或多个字符,每个或为来自源字符集的多字节字符(不含"、\及换行符),或为转...
Forms a string literal of the desired type. 1)Returnsstd::string{str, len}. 2)Returnsstd::u8string{str, len}. 3)Returnsstd::u16string{str, len}. 4)Returnsstd::u32string{str, len}. 5)Returnsstd::wstring{str, len}. Parameters ...