求高手帮忙！
帮我作个字符串的截取的例子，字符串拷贝的例子（都用自定义函数做）
谢谢拉

[解决办法]
你查函数实现不就完了

[解决办法]

C/C++ code

/****strncpy.c - copy at most n characters of string**       Copyright (c) 1985-1997, Microsoft Corporation. All rights reserved.**Purpose:*       defines strncpy() - copy at most n characters of string********************************************************************************/#include <cruntime.h>#include <string.h>/****char *strncpy(dest, source, count) - copy at most n characters**Purpose:*       Copies count characters from the source string to the*       destination.  If count is less than the length of source,*       NO NULL CHARACTER is put onto the end of the copied string.*       If count is greater than the length of sources, dest is padded*       with null characters to length count.***Entry:*       char *dest - pointer to destination*       char *source - source string for copy*       unsigned count - max number of characters to copy**Exit:*       returns dest**Exceptions:********************************************************************************/char * __cdecl strncpy (        char * dest,        const char * source,        size_t count        ){        char *start = dest;        while (count && (*dest++ = *source++))    /* copy string */                count--;        if (count)                              /* pad out with zeroes */                while (--count)                        *dest++ = '\0';        return(start);}
[解决办法]
截取字符串的其实可以通过

strstr

strncpy,memcpy来实现
[解决办法]
或者干脆就用strncpy