constant expression

1 Basic form if (expression) statementThe semantics are: if the expression is true, the subsequent statement is executed, and if the expression is false, the statement is not executed.Example 1 compares two integers, max is the maximum number.1 void

C language Conditional compilation and C language compilation I have been learning C language for almost two years. I have been learning this thing, but I have never studied it seriously. In fact, it is very simple. I only blame myself for being too

First, the knowledge point:1. Basic types of data:(1) Integral type Short integer type Integral type (int) Long shaping (2) floating-point type Single-precision float (float) Double-precision floating-point type

Stack overview?? In the computer world, stacks are a concept that cannot be overlooked, and stacks are two data structures. A stack is an ordered data structure of data items that can be inserted and deleted only at one end (called the top of the

We already know that the const variable cannot be modified. C + + also provides a more "strict" constexpr specifier (constexpr-specifier), when a variable is declared or defined, if the type specifier is preceded or followed by a constexpr specifier,

//1. The program tries to avoid relying on the implementation of the environmental behavior. For example, if the size of an int is treated as a known value that is determined to be constant, then such a program is called non-portable. typedefintInt32

In the C ++ programming language, some judgment statements exist, such as the if and C ++ switch-case statements. In this article, we will introduce the basic usage of the C ++ switch-case statement in detail, hoping to help you. Detailed

constant Expressions (const expression): An expression that means that the value does not change and that the results are evaluated during compilation . (a constant expression cannot be a result of the run ).const int i=3; is a constant

This article goes to: http://www.cnblogs.com/gw811/archive/2012/10/25/2738929.htmlC + + templatesTemplates are tools that support parameterized polymorphism in C + +, using templates that enable users to declare a generic pattern for a class or

Template definition: A template is a tool for implementing the code reuse mechanism, which can implement type parameterization, that is, to define the type as a parameter, thus enabling real code reusability. Template can be divided into two

A template is a tool for implementing a code reuse mechanism that implements type parameterization, which defines a type as a parameter, enabling true code reusability.Template can be divided into two categories, one is a function template, the

The constexpr function refers to a function that can be used for constant expressions. There are other functions that define the CONSTEXPR function, but there are several conventions to follow: The return value type of the function and the type of

C + + one-dimensional arrayDefining a one-dimensional array The general format for defining a one-dimensional array is:Type identifier array name [constant expression];For example: int a[10]; It represents an array named A, which is

C + + constant expressionsA constant value is a value that does not change. C + + provides two keywords that enable you to express the intention not to modify the object, but also to enable you to implement the intent.C + + requires a constant

Tri-Mesh operator ?:; "?" The meaning of an operator is to first evaluate the value of expression 1 and, if true, execute Expression 2 and return the result of expression 2; If the value of expression 1 is false, the expression 3 is executed and the

The checked and unchecked operators control overflow checking in the current environment when used in integer arithmetic operations. The following operations participate in the checked and uncheced checks: Predefined + + and--: unary operator, when

C + + templatesTemplates are tools that support parameterized polymorphism in C + +, using templates that enable users to declare a generic pattern for a class or function so that some data members or member functions in a class get arbitrary types

C Language Common errors in the English tableFatal error C1003:error count exceeds number; Stopping compilationChinese control: Too many errors, stop compilingParse: Modify the previous error and compile againFatal error c1004:unexpected end of file

C language programming study notes-array, C language programming learning notes-array. Array 6.1 (1) It is a set of ordered data. The data element types are the same, and they are stored sequentially, occupying adjacent storage space. (2) The array

Java syntax introduction (5): Conditional Control-general Linux technology-Linux programming and kernel information. The following is a detailed description. Conditional Control: if and switch 1: Condition Statement A condition statement is the