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ѸÀ×±ÊÊÔ ×Ö·û´®·´×ª C¿âº¯Êý strrev

char* my_strrev( char* string )
{
 char *left, *right, ch;
 left = right = string;
 while( *right++ != '\0');
 right -= 2;
 while( left<right )
 {
  ch = *left;
  *left = *right;
  *right = ch;
  ++left; --right;
 }
 return string;
}
// ²âÊÔ´úÂë
int _tmain( int argc, TCHAR* argv[] )
{
 char szBuf[10] = {0};
 strcpy_s( szBuf, "hello" );
 printf( "%s", my_strrev(szBuf) );
 system( "pause" );
 return 0;
}


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Pipe is a worm hole connecting C and C++

In C programming language, the observer design pattern is implemented with function pointer (aka callback function). But in Qt library, it introduces signal and slot. How to link a callback function from the C callback function to the C++ siganl and slot is a problem I encounter. Call back function ......

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    size_t  strlen(const char *s)
    {
       size_t n;
       for(n = 0; *s != '\0'; s++)
          ++n;
       return n;
  ......

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#define COMDEF_H
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#endif
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typedef unsigned char      boolean;     /* Boolean value type. */
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