What does string.h stand for in c++

string.h in C represents the header file containing C-style string functions in C language, including: string processing: strcpy, strcmp, strcat, strlen, etc. String comparison: strcmp , strncmp, strcoll, etc. String conversion: atof, atoi, atol, etc. String search: strchr, strrchr, strstr, etc. String segmentation: strtok, etc. Memory management: malloc, realloc, free, etc.

What does string.h stand for in C?

string.h is a header file in the C standard library. In C, the string.h header file is included through <cstring></cstring>. It declares functions for handling C-style strings.

Contained functions

<cstring></cstring> The header file contains the following functions:

• characters String processing: strcpy, strcmp, strcat, strlen, etc.
• String comparison: strcmp, strncmp, strcoll, etc.
• String conversion: atof, atoi, atol, etc.
• String search: strchr, strrchr, strstr, etc.
• String splitting: strtok, etc.
• Memory management: malloc, realloc, free, etc.

Specific instructions

• strcpy: Copy one string to another string
• strcmp：Compare two strings
• strcat：Concatenate two strings
• strlen：Get the length of the string
• strchr：Find the first occurrence of characters in the string
• strtol: Convert string to long
• malloc: Allocate memory
• realloc: Reallocate memory
• free：Release memory

These functions are basic when using C-style strings (character arrays terminated with '\0' characters) in C language Function. In C, the string.h header file is typically used for interacting with C code, or working with older code bases.

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