Programmer Think

preface The C library provides multiple functions for processing strings. ANSI C places the prototypes of these functions in string H header file. The most commonly used functions are strlen(), strcat(), strncat(), strcmp(), strncmp(), strcpy(), and strncpy(). In addition, there is the sprintf() function, whose prototype is stdio H header file ...

04. Transplantation of W601 EasyLogger 1. Introduction EasyLogger It is an ultra lightweight (ROM < 1.6K, RAM < 0.3k) and high-performance C/C + + log library, which is very suitable for resource sensitive software projects, such as IoT products, wearable devices, smart homes, etc. Compared with the well-known C/C + + log libraries such ...

Nameless pipe ❤️ ❤️ ❤️ Pipe is also called anonymous pipe. It is the oldest form of IPC (interprocess communication) in UNIX system. All UNIX systems support this communication mechanism.When the parent process calls the pipe function, the kernel will create a cache in the kernel space when executing the pipe function. This cache is the ...

Storage category C language provides many different models or storage categories to store data in memory. Scope Scope describes the area in the application where identifiers are accessible. Let's start with a brief introduction: The scope of a C variable can be: Block scopeFunction scopeFunction prototype scopeFile scope A block is a c ...

Catalog 1. Preface 2. Introduction of Stack Content 3. Sequence stack Chain Stack V. Summary 1. Preface This paper mainly introduces the related knowledge of stack and some basic operations of stack. The encapsulated sequential stack and chain stack code are given for direct replication. 2. Introduction of Stack Content A stack is a l ...

Matrix_hub Matrix operation Library - C language ##The lib of Matrix operation for C language. (matrix operation library – C language) Author: Amoiensis Email: Amoiensis@outlook.com Data:2020.02.12 More information: https://github.com/Amoiensis/Matrix_hub Source code download: release: https://github.com/Amoiensis/Matrix_hub/ ...

1, Experimental purpose Write a C program, review the concepts of global variables, local variables, heap and stack, and program and verify them in Ubuntu (x86) system and STM32(Keil) (stm32 sends the serial port printf information to the host computer serial port assistant through serial port). The allocation addresses of heap, stack, glo ...

1, Purpose of the experiment: 1) Be familiar with and master the principle and implementation process of five basic two-dimensional geometric transformations, including translation, proportion, symmetry, rotation and staggered cutting;2) Be familiar with and master the principle and implementation process of two-dimensional coincidence transfo ...

title Construction expression category comprehensive time limit 1S Memory limit 100Kb Problem description Give an integer n representing the length of the sequence (3 < = n < = 9). Insert '+', '-', '' in the sequence 1, 2, 3... N to construct the expression. Inserting '' means that the first and second digits form an integer, for ...

BC53 calculation of univariate quadratic equation describe Input the values of a, B and C from the keyboard, program, calculate and output the root of the univariate quadratic equation ax2 + bx + c = 0. When a = 0, output "not rectangular equation". When a ≠ 0, calculate and output the root of the equation according to the t ...