Unfamiliar C string processing functions

_ ITOA

In stdlib.

# Include <stdlib. h> <br/> # include <stdio. h> <br/> void main (void) <br/>{< br/> char buffer [20]; <br/> int I = 0x223; <br/> _ ITOA (I, buffer, 10); <br/> puts (buffer); <br/> _ ITOA (I, buffer, 16 ); <br/> printf ("0x % s/n", buffer); <br/> getchar (); <br/>}< br/> // 547 <br/> // 0x223 

 

Scanf, scanf_s

Fscanf, fscanf_s

The former is input directly, and the latter needs to specify the length.

Http://topic.csdn.net/u/20110609/20/61e146fb-3d92-43ee-a017-00080e74cd04.html? Seed = 2003693757 & R = 73768052 # r_73768052

Function Format control:

Http://hi.baidu.com/vhou/blog/item/a6c4c4b07139e7530923022b.html

 

 

long int strtol ( const char * str, char ** endptr, int base );

Convert string to long integer

 

String. h/cstring functionscopying:

Memcpy

Copy block of memory (function)

Memmove

Move block of memory (function)

Strcpy

Copy string (function)

Strncpy

Copy characters from string (function)

Concatenation:

Strcat

Concatenate strings (function)

Strncat

Append characters from string (function)

Comparison:

Memcmp

Compare two blocks of memory (function)

Strcmp

Compare two strings (function)

Strcoll

Compare two strings using locale (function)

Strncmp

Compare characters of two strings (function)

Strxfrm

Transform string using locale (function)

Searching:

Memchr

Locate character in block of memory (function)

Strchr

Locate first occurrence of character in string (function)

Strcspns

Get span until character in string (function)

Strpbrk

Locate character in string (function)

Strrchr

Locate last occurrence of character in string (function)

Strspns

Get span of Character Set in string (function)

Strstr

Locate substring (function)

Strtok

Split string into tokens (function)

Other:

Memset

Fill block of memory (function)

Strerror

Get pointer to error message string (function)

Strlen

Get String Length (function)