Programmer Think

1. The default six member functions of the class If there is nothing in a class, it is referred to as an empty class. Is there nothing in the empty class? No, if I don't implement any class, the following six default member functions will be generated automatically Default member functions: they are special member functions. If we don't imp ...

C/C + + memory management C/C + + memory distribution Let's start with the following code: int globalVar = 1; static int staticGlobalVar = 1; void Test() { static int staticVar = 1; int localVar = 1; int num1[10] = { 1, 2, 3, 4 }; char char2[] = "abcd"; char* pChar3 = "abcd"; int* ptr1 = (int*)malloc(sizeof (int)* 4); int* ptr2 = ...

C++11 provides a date and time related library, chrono. Through chrono library, you can easily deal with date and time, which provides convenience for program development. The chrono library mainly contains three types of classes: time interval duration, clock, and time point. Time interval duration Common class members Duration refers to a ...

A Union is defined in the following format: union Common body name { Member list }; //A common body is sometimes called a Union or a Union, which is also the original meaning of the word Union. Difference between structure and common body: each member of structure will occupy different memory and have no influence on each other ...

Basics The statement ends with a semicolon compile g++ name.cpp -o new_name # gcc for c language # g for c + +++ implement ./name Standard library Core language: provides all building blocks, including variables, data types, constants, etcc + + Standard Library: provides a large number of functions for manipulating objects such as fi ...

1, Greater than operator overload #include <iostream> using namespace std; class Student { public: Student(string n, int i, float s) { this->id = i; this->name = n; this->scored = s; } bool operator>(Student &s) { if (this->scored > s.scored) { ...

Common string handling functions: String concatenation function: (strcat) char * strcat (char destination[], const char source[]); //Function: connect the string of parameter 2 to the end of the first parameter string //Return value: the first address of the first string //Note: ensure that the space length of parameter 1 is enough to store t ...

Write in front Hello! Welcome to my blog, I hope my ideas can help you! Problem description Everyone must have played flying chess. Now, the chess that Lele and Yueyue want to play is very similar to this, but it's a little simpler. The chessboard is composed of N grids, marked as grid 0 to grid N-1 respectively. There are two kinds of grid ...

1, Basic concepts of polymorphism Polymorphism is one of the three characteristics of C + + object-oriented. Polymorphisms fall into two categories: Static polymorphism: function overloading and operator overloading Dynamic polymorphism: derived classes and virtual functions implement runtime polymorphism, Virtual is added before the funct ...

catalogue Object oriented programming Complexity analysis Linked list Unidirectional linked list Bidirectional linked list Circular linked list Jump linked list Sparse table Stack and queue Stack: (last in, first out) Queue: (first in, first out) Queue with two stacks Stack with two queues recursion Recursive implementation of fa ...