util.h

这是在linux下

#ifndef  __UTIL_H_
#define  __UTIL_H_

#include <ctype.h>
#include <stdarg.h>
#define size_t unsigned int
int u_isascii(int c);
int u_isdigit( int c);
int u_toascii( int c );
int u_isalpha( int c );
int u_isalnum( int c );
int u_islower( int c );
int u_isupper( int c );
int u_tolower( int c );
int u_toupper( int c );
void *memchr(const void *str, int c, size_t len);
int do_div(unsigned int a,unsigned int b);
char * strcpy(char * dest,const char *src);
char * strncpy(char * dest,const char *src,size_t count);
char * strcat(char * dest, const char * src);
int strcmp(const char * cs,const char * ct);
size_t strlen(const char * s);

size_t strnlen (const char *string, size_t maxlen);
void * memset(void * s, char c, size_t count);
void * memcpy(void * dest,const void *src,size_t count);
int atoi(const char *s);
int vsprintf(char *buf, const char *fmt, va_list args);

#endif