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# Employee management system ## 1. Management system requirements The employee management system can be used to manage the information of all employees in the company This tutorial mainly uses C++To realize a staff management system based on polymorphism Employees in the company are divided into three categories: ordinary employees, manag ...

shared_ptr Heap memory is used very frequently in C++ programming. The application and release of heap memory are managed by the programmer himself. Programmers themselves Managing heap memory improves program efficiency, but overall heap memory management is cumbersome, with the introduction of smart pointers in C++11 Concepts to facilitate h ...

1. Hand Gan (personal experience, no big use, finally code)     2. Code (the following is what I can understand from the code answers of other bloggers. For details, please go to the following website directly) https://blog.csdn.net/qq_44524918/article/details/113530469?spm=1001.2014.3001.5506 1) Question B: year string [problem description]X ...

summary: The algorithm is mainly composed of header files < algorithm > < functional > < numeric >.< algorithm > is the largest of all STL header files, covering comparison, exchange, search, traversal, copy, modification, etc< numeric > is very small and only includes a few template functions that perform sim ...

03 reworking concurrent practice of C + + 6 Previous: 03 reworking concurrent practice of C + + 5 [design lock based concurrent data structure] 6.1 meaning of concurrent design At the most basic level, designing a data structure for concurrency means that multiple threads can use the data structure at the same time to perform the same or ...

catalogue 1, Divide and conquer Ideological principle Specific steps Example 1 Algorithm conclusion 2, Dynamic programming algorithm Ideological principle Specific steps Algorithm implementation Algorithm conclusion 3, Backtracking algorithm         Algorithmic thought         Basic steps         Example 2         Algorithm imp ...

Type of C + +_ Traits is a set of pure compile time logic, which can make some type judgment and branch selection. It is mainly used for template programming. Use type_traits is not difficult, but we hope to have a deeper understanding of its implementation. At the same time, we can further experience c + + template programming. This article ai ...

Full code: https://github.com/abmcar/ACM/tree/master/OpenjudgeNow/Codeforces/Good%20Bye%202021-2022%20is%20NEAR Better reading experience: http://www.abmcar.top/archives/goodbye20212022isneara-d-ti-jie A. Integer Diversity Give you n numbers, you can choose any number to multiply by - 1, and ask how many different numbers you can get at mos ...

1. Based on the following class declaration: // base class class Cd { // repersents a CD disk private: char performers[50]; char label[20]; int selections; // number of selections double playtime; // playing time in minutes public: Cd(char * s1, char * s2, int n, double x); Cd(const Cd & d); Cd(); ~Cd(); void Report() const; // r ...

1002 write the number C++ subject Read a positive integer n, calculate the sum of its digits, and write each digit of the sum in Chinese pinyin. Input format: Each test input contains one test case, which gives the value of the natural number n. Here we guarantee that n is less than 1 ...