Article directory Summary 1.memcpy 1.1 Function introduction 1.2 Simulation implementation 2.memmove 2.1 Function introduction 2.2 Simulation implementation 3. memset 3.1 Function introduction 4.memcmp 4.1 Function introduction Abstract This article introduces commonly used memory operation functions in C language, including memcpy, memmove, memset and memcpy. These functions handle the copying, moving, and initialization of memory data. […]
Tag: memcmp
Do you really understand memory functions (memcpy, memmove, memset, memcmp)?
Blog homepage: Jiang Chijun’s blog ?Inclusion column: The road to advanced C language Column recommendation: ?Beginner’s road to C language ?Exploration of data structure Code repository: Jiang Chijun’s code repository Everyone is welcome to likeCommentCollect? Article directory 1.memcpy function 1.1 [Notes]: 1.2【Example】 Simulation implementation of memcpy 2.memmove function 2.1 [Notes]: 2.2【Example】 Simulation implementation of memmove […]
Memory functions (memcpy, memmove, memcmp, memset)
This article mainly introduces the simulation implementation of some commonly used memory functions and some functions in C language. The following functions all need to include the header file: Directory 1. The memcpy function 1. Function introduction 2. Simulation implementation of memcpy Two, memmove function 1. Function introduction 2. Simulation implementation of memmove Three, memcmp […]
C language: character functions and string functions (memory operation functions memcpy, memmove, memset, memcmp+ simulation implementation) part two
Directory foreword 1. Memory operation function: memcpy Simulate the implementation of memcpy: Second, the memory operation function: memmove Simulate the implementation of memmove: Three, memory operation function: memset Simulate the implementation of memset: Fourth, the memory operation function: memcmp Simulate the implementation of memcmp: Foreword Find the length of the string: (explained in the previous […]
Memory operation functions memcpy, memmove, memcmp, memset
Memory operation function one.memcpy Function Introduction void * memcpy ( void * destination, const void * source, size_t num ); 1. Function function: copy the data of the first num bytes of the space pointed to by the source to the destination 2. Don’t care about ‘\0’, it will not stop because of ‘\0’, it […]
memchr, memset, memmove, memcpy, memcmp under the string.h file, and custom implementation of the same function
Directory One, memchr Two, memset Three, memmove Four, memcpy 5. memcmp Custom implementation: 1. memchr Two, memset 3. memmove 4. memcpy Five, memcmp One, memchr This function is used to find whether there is a certain number in the data (directly search for bytes) memchr usage: Function declaration: Parameters of the function: memchr example: int […]
memcpy, memmove, memcmp – memory function three swordsmen
Directory 0. Preface 1. memcpy function 2. memmove function 3. memcmp function 0. Preface First of all, we need to know that memory means memory in Computer Science (CS). It can be seen that the Three Musketeers functions mainly start from the memory. The memory function operates the object by accessing the address. Applied to […]
C language—-memory operation function (memcpy, memmove, memcmp, memset)
Directory Foreword: 1. Memory initialization function (memset) 1. Function Description 2. Simulation implementation 3. The memory space diagram under the code running Second, the memory copy function (memcpy) 1. Function Description 2. Function implementation process, and the difference with strcpy 3. Simulation implementation Three, memmove 1. Function description 2. Simulation implementation 3. The difference between […]
Library functions strcpy, strcat, strcmp, strncpy, strncat, strncmp, strstr, strtok, strerror, memcpy, memmove, memset, memcmp
1. Library functions for processing characters and strings 1. Find the length of the string strlen 2. String function with unlimited length strcpy strcat strcmp 3. String functions with limited length strncpy strncat strncmp 4. String search strstr strtok 5. Error message report strerror 6. Memory operation function memcpy memmove memset memcmp 2. Function introduction […]
Large collection of comparison functions: strcmp, strncmp, memcmp
Foreword: Then play music and dance, let’s continue to look at string functions and memory functions. What I want to talk about today is a large collection of comparison functions, not much to say, open your eyes! ! ! strcmp function: What is the strcmp function? strcmp is string compare, which translates to string comparison. […]