function return type

The function return type is divided into Returns the base data type (pointer function) returns a pointer type that returns a new pointer to a pointer that returns a worthwhile address//pointer function that cannot return a local amount (

The function of the keyword sizeof is to return the number of bytes of memory consumed by the object or type, and the return value is size_t.Number of bytes consumed by the base data type: (32-bit system)Char 1 bytesBOOL 1 bytesShort 2 bytesint 4

BC Credit disk Platform rental Q1446595067 Some basic points of knowledge:constructor function:对象生成时构造函数自动被调用，对象一旦生成，就在也不能在其上执行构造函数。若自己定义的构造函数带参数，则声明对象时也需要带参数，缺省函数除外。There are three scenarios in which the copy constructor works:当用一个对象去初始化同类的另一个对象时 如

Functions: Functions are separate blocks of code that perform specific tasks.Swift's uniform function syntax is flexible enough to express anything with simple C-type functions without parameter names, local and external complex Objective-c-style

In the development process, the return value type of the function should be invariant, but PHP is a weakly typed language. So PHP does not have this kind of syntax verification, because of this, caused a lot of pits. For example, the following code:

20165323 Learning Basics and C-language basic survey I. Skills learning experience1. What skills do you have that are better than most people?I think I play badminton is OK, can not be said to play better than most people, but for some play

1. References:1. Write a simple WebService instance using Java http://nopainnogain.iteye.com/blog/7915252.axis2 integrates with Eclipse to develop Web Service

C + + language is an object-oriented language, the use of C + + written code more simple, efficient, more maintainable and reusable. But many people use the C + + language but feel C + + and C programming is no different. This is actually due to the

One, the logical operator: The common logical operators are: and, or and not. The semantics are exactly the same as the logical operators in other programming languages. Second, the comparison operator: The following is a list of comparison

JavaScript supports rewriting of methods, but there is no method overloading mechanism, so can you mimic overloading mechanisms? The answer is yes.(here to add the difference between rewriting and overloading, I was once confused.) Overrides are

This article mainly introduces the difference between overloading, overriding (overwriting) and hiding in C + +, which is a very important concept of C + + object-oriented programming, which can be referenced by friends.The examples in this article

(i) inline function (excerpt from the third edition of C + + primer)adding the keyword inline to the function declaration or definition in the function return type specifies the min () as inline. inline int min (int first, int secend) {/****/};The

Pointer array && array pointersChar *a[5]; Defines an array of pointers, the elements of which are char * pointer types. Initialization can also hold characters or strings inside. The type of a is char *[5]//if char *a[5]={"red", "white", "Blue"

snake death judgment, eating food, scoringOne, the death of the Snake judgment: To install the border, hit their own deathDefinition: Issnakedie ()//Snake death judgment function, return type bool typeIdeas:// the next of the Serpent's Head, is the

(i) inline function (excerpt from the third edition of C + + primer)Adding the keyword inline to the function declaration or definition in the function return type specifies the min () as inline.inline int min (int first, int secend) {/****/};The

struct in C + +:(the entire struct cannot be accessed, such as: The struct cannot be output at once.) )1): In C, structs can only contain members and cannot have functions, but C + + can. Furthermore, the function can directly access the data

Chapter IIStart learning C + + 2.1 Main FunctionThe simple code is as follows:#include int main () {//this is my first programusing namespace Std;cout all statements in C + + End with a semicolon (;). return 0; 2.1.1 Function header as an

Pointer array && array pointerschar (*PTR) [5]; Defines a pointer to an array of PTR, pointing to an array containing 5 char types char *a[5]; Defines a pointer array A, containing 5 char* type pointers#include int main (void) {char

Special tools and techniques--class member pointersA member pointer can do this: get a pointer to a specific member , and then get that member from an object or another object . The member pointer should contain the type of the class and the type of

1. Instance 1 (see mainly [2]) 1.1. System function: Develop a calculator service Calculateservice, which includes addition (plus), subtraction (minus), multiplication (multiply), except (divide) operations. 1.2. Pre-development preparation: