5-b12.h

/* -----------------------------------------

     本文件不需要提交、不允许改动

   ----------------------------------------- */

#pragma once

/* 此处给出了一组字符串处理函数的原型声明 */
int tj_strlen     (const char str[]);
int tj_strcat     (char s1[],       const char s2[]);
int tj_strncat    (char s1[],       const char s2[], const int len);
int tj_strcpy     (char s1[],       const char s2[]);
int tj_strncpy    (char s1[],       const char s2[], const int len);
int tj_strcmp     (const char s1[], const char s2[]);
int tj_strcasecmp (const char s1[], const char s2[]);
int tj_strncmp    (const char s1[], const char s2[], const int len);
int tj_strcasencmp(const char s1[], const char s2[], const int len);
int tj_strupr     (char str[]);
int tj_strlwr     (char str[]);
int tj_strchr     (const char str[], const char ch);
int tj_strstr     (const char str[], const char substr[]);
int tj_strrchr    (const char str[], const char ch);
int tj_strrstr    (const char str[], const char substr[]);
int tj_strrev     (char str[]);