不熟悉的C字符串处理函数

 _itoa

位于stdlib中。

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

 

scanf,  scanf_s

fscanf, fscanf_s

前者直接输入，后者需要指定长度

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

函数的格式控制：

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 Functions

Copying:

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)

strcspn

Get span until character in string (function)

strpbrk

Locate character in string (function)

strrchr

Locate last occurrence of character in string (function)

strspn

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)