Programming VIP

1. Threads 1. Definition Similar to a process, threads are a mechanism that allows applications to perform multiple tasks concurrently. ** A process can contain multiple threads. ** All threads in the same program execute the same program independently and share the same global memory area, including initialized, uninitialized, and hea ...

It is quite complex to implement advanced String classes. Unlike C++ and C#, many modules need to solve their own memory problems, and how to improve the efficiency of memory space, whether calling a function triggers a copy constructor, and how to avoid duplicate memory release when triggering a copy constructor. There are a few overloads ...

preface This article mainly introduces the concepts of string and array in C/C + + 1. String storage variable 1.1 project requirements On the basis of item 2, the user name and password are stored in strings 1.2 project realization login2.cpp #include <iostream> #include <Windows.h> #Include < string > / / St ...

What is a branch statement before understanding it? Statement: a statement separated by a semicolon in C language, such as printf("hehe"); 1, if else branch statement The following code #define _CRT_SECURE_NO_WARNINGS #include <stdio.h> int main() { int age =10;//Branch statements execute only one sentence by default if ...

Section 5 operators and operator overloading In C + +, the operator itself is a function that can be customized by users. Then we think that the calculation of complex numbers is not as good as using the + sign directly, and the concept and operation rules of the + sign need operator overloading. Operator overloading can be written in two way ...

Enables EventLoop to handle timer events Timing function Used to make the program wait for a period of time or schedule a scheduled task: sleep alarm usleep nanosleep clock_nanosleep getitimer / setitimer timer_create / timer_settime / timer_gettime / timer_delete timerfd_create / timerfd_gettime / timerfd_settime chooses this method. ...

Generic Programming When learning function overloading before, we wrote a Swap function Swap void Swap(int& left, int& right) { int tmp = left; left = right; right = tmp; } void Swap(char& left, char& right) { char tmp = left; left = right; right = tmp; } void Swap(double& left, double& right) { double tmp ...

1, Memory pool introduction 1. Introduction to C + + memory pool Memory pool is a kind of memory allocation method. It is to apply for allocating a certain number of memory blocks of equal size (generally) for standby before using memory. When there is a new memory demand, a part of the memory block is separated from the memory pool. If the m ...

1: Input and output of C language and C++ IO stream In C language, there are three groups of input and output functions that we often use Input / outputOperation objectprintf/scanfConsolefprintf/fscanffilesprintf/sscanfCharacter array (buffer) The corresponding operations in C + + are as follows Input / outputOperation objectostream/isr ...

  compare some differences between C and C + + definition categories to Stack as an example:    C language defines the stack is nothing more than defining a structure and then defining some functions. Its data and functions are separated. When operating data, you need to call the initialization function after defining the t ...