简单问题 char* 怎么转换为const unsigned chiar*

luckyfool 2004-04-26 03:06:40

如题，还有关于const 的和unsingned的数据类型应该怎么转换呢？？

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luckyfool 2004-04-26

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这样好像可以

char *s = "sdfsdfsd";
const unsigned char* p = (const unsigned char*)(LPCTSTR)s;

减少库的使用，解决那些需要小代码量，但苦恼于没有简易的字符串处理函数的郁闷 char *itoa_private(int val, char *buf, unsigned radix);//整数转字符串 int my_isdigit(int ch);//判断字符是否为数字 long long StrToInt(const char *s,int sign);//字符串转数字 int atoi_32(const char *s);//将字符串str转换为32位整型，其正数的最值为0x7FFFFFFF，负数的最小值为0x80000000,考虑数字会溢出的情况 void LettersChange(unsigned char*str, unsigned char font);//大小写字母变成大小写字母 signed int st_strlen(unsigned char* str);//获取字符串长度 signed int st_strcmp(unsigned char *s,unsigned char *t);//比较两个字符串大小 unsigned char *st_strcpy(unsigned char *t,unsigned char *s);//字符串拷贝 signed int st_strncmp(unsigned char *dest,unsigned char *src,unsigned int Len);//可变长度字符串大小比较 signed char st_toupper(unsigned char c);//小写字符转化为大写字符 unsigned char *st_strcat(unsigned char *s,unsigned char *t);//字符串连接 signed int st_memcpy(unsigned char *dest, unsigned char *src, unsigned int Len);//可变长度内存拷贝 signed int st_memset(unsigned char *dest,unsigned char byte, unsigned int Len);//设置长度为Len的内存块为byte signed int st_memcmp(unsigned char* dest, unsigned char* src, unsigned int Len);//内存段内数据比较 int gsmInvertNumbers(const char* pSrc, char* pDst, int nSrcLength);//正常顺序的字符串转换为两两颠倒的字符串，若长度为奇数，补'F'凑成偶数 int gsmSerializeNumbers(const char* pSrc, char* pDst, int nSrcLength);//两两颠倒的字符串转换为正常顺序的字符串 int gsmEncode7bit(const char* pSrc, unsigned char* pDst, int nSrcLength);//7bit编码 int gsmDecode7bit(const unsigned char* pSrc, char* pDst, int nSrcLength);//7bit解码 int gsmString2Bytes(const char* pSrc, unsigned char* pDst, int nSrcLength);//可打印字符串转换为字节数据 int gsmBytes2String(const unsigned char* pSrc, char* pDst, int nSrcLength);//字节数据转换为可打印字符串

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