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References for this article are from cplusplus: cplusplus.com - The C++ Resources Networkhttp://www.cplusplus.com/   catalogue 1, strstr string lookup 2, strtok string extraction 3, strerror error message report 4, Character classification function 5, memcpy memory copy 6, memmove memory copy 7, memcmp memory comparison 8, memset mem ...

1. Branch statement if switch 2. Circular statement while for do while 3.goto statement What is a statement? C statements can be divided into the following five categories: Expression statementFunction call statementControl statement (introduced in this chapter)Compound statementEmpty statement Control statements are used to con ...

Initial contact rand() function _I learned three sort algorithms before: 1. Select Sort; 2. Bubble sort; 3. Insert sort; Sort the elements in the array using three algorithms. At first, the array was initialized with 0 ~ n ascending order, then descending order to n ~ 0, which was almost meaningful. To show "authenticity", we dec ...

📒 Blog home page: Actor's blog 🎉 Welcome to pay attention 🔎 give the thumbs-up 👍 Collection ⭐ Leave a message 📝 ❤️ Look forward to communicating together! 🙏 The author's level is very limited. If you find an error, please let me know. Thank you! 🌺 If you have any questions, you can communicate by private letter!!! 🌺 outline # ...

1. Sorting principle Quick sort is an exchange sort method of binary tree structure proposed by Hoare in 1962. Its basic idea is: any element in the element sequence to be sorted is taken as the reference value, and the set to be sorted is divided into two subsequences according to the sort code. All elements in the left subsequence are less t ...

catalogue Constant and Variable variable Location of variables Scope life cycle constant ① Literal constant ② const modified constant ③ #define defined identifier constant ④ Enumeration constant String type ASCII code table Escape character Constant and Variable variable Variables can be divided into local variables and glo ...

catalogue   🌲 Pointer 🌼 What is a pointer 🌼 Field pointer 🌱 Several cases of wild pointer 🌱 How to avoid wild pointer? 🌼 Pointer operation 🌼 Different representations of pointers 🌲 structural morphology 🌼 Definition of structure 🌼 Assignment of structure 🌼 Access to structure members 🌱 Dot operator    🌱-> ...

Write before: Greedy snake, I believe everyone has played it. After learning the C language, I also want to write a greedy Snake game myself. Then I checked some materials. Finally, based on a video of station B, I added my own thinking, design and improvement, and created my own greedy Snake game, which I share with you here. (original vide ...

acwing game 24 This week's competition has three topics: simulation, enumeration and simulation acwing 4070. XOR Link: 4070. XOR - AcWing question bank Title Description Problem solving ideas Very simple simulation, record the maximum value and the last input when entering, and don't even open the array code #include<iostream> ...

Author:beiyanyunyi A confident man majoring in software engineering Not so many people are diligent, but you don't act and fear others. CSDN:weixin_62688213 preface We transform Yang Hui's triangle into an image similar to the mathematical coordinate system. In this way, you can take the array to save the data. 1, Initialize 1. Heade ...