Question code: #include <iostream> #include <cstring> #define _CRT_SECURE_NO_WARNINGS using namespace std; char* itoa(int n, char* s) { char* p = s; do { *p = n % 10 + ‘0’; n = n / 10; p + + ; } while (n > 0); *//A p–; char* q = s; char t; while (q < […]
Tag: strcat
C language simulates the implementation of strcat, strcmp, strstr functions
Directory strcat function 1. Function prototype 2. Function function 3. Function usage examples 4. Simulate and implement strcat strcmp function 1. Function prototype 2. Function function 3. Function usage examples 4. Simulate and implement strcmp strstr function 1. Function prototype 2. Function function 3. Function usage examples 4. Simulation and implementation of strstr strcat function […]
Simulation implementation of strcpy, strcat, strstr, memcpy and memmove
Table of Contents Introduction: 1.strcpy function 1.1The function and basic usage of strcpy function 1.2 Note: 1.3 Simulation and implementation of strcpy function 2. strcat function 2.1The function and basic usage of strcat function 2.2 Note: 2.3 Simulation and implementation of strcat function 3.strstr function 3.1 The function and basic usage of strstr function 3.2 […]
[C Language Function Analysis] strcat function analysis and prototype implementation in C language
Directory title `strcat` function prototype analysis in C language 1. Introduction to function prototype 2. Parameters and return values 2.1 Parameters 2.2 Return value 3. Underlying implementation 4. Code example 5. In-depth insights 6. The underlying implementation of the `strcat` function 6.1 Basic Implementation 6.2 Implementation in the compiler 6.3 In-depth Insights 7. The importance […]
[C language] – String and memory functions (simulate memory function strlen strcpy strcat strcmp…)
This chapter introduces some commonly used functions related to strings or some fixed memory functions, and simulates the implementation of some functions to help you understand more thoroughly. Table of Contents strlen Find the length of the string strcpy string copy strcat append string function strcmp string comparison function Find a string in the strstr […]
Improving internal strength simulation implementation library function strlen/strncpy/strcmp/strcat/strstr/memcpy/memmove
strlen strncpy strcmp strcat strstr memcpy memmove strlen The function of the strlen function is to find the first element of the string and start to calculate the length of the string until ‘\0’, but the length of \0 will not be calculated #include<stdio.h> size_t Strlen(const char* src) { size_t count = 0; while (*src […]
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 […]
String processing functions (strcpy strcat strcmp strlen)
1. String copy function strcpy Header file: string.h Function prototype: char * strcpy( char * dest, const char * src ) Call format: strcpy(dest,src) Function: string copy Parameters: src is the starting address of the source string, dest is the starting address of the target string Return value: the starting address of the target string […]
Self-realization of strlen, strcpy, strcat, strcmp, strstr functions in C language
Independent implementation of C language strlen, strcpy, strcat, strcmp, strstr functions: Self-realization: Independent implementation of strlen, strcpy, strcat, strcmp, strstr functions in C language: 1. strlen 2. strcpy 3. strcat 4. strcmp 5. strstr Note: The following library functions require the #include header file, and the #include header file is required to include the assert […]
[About the simulation implementation of library functions] – strlen, strcpy, strcmp,, strcat, strstr, memcpy, memmove
Article directory foreword Implementation of my_strlen() Implementation of my_strcpy() Implementation of my_strcmp() Implementation of my_strcat() Implementation of my_strstr() Implementation of my_memcpy() Implementation of my_memove() Foreword The string operation function is a very important function in C language, which includes the essence of pointers, and at the same time, it is a very good practice method […]