strcpy 函數

 1 char *strcpy(char *strDest, const char *strSrc)
 2 {
 3     assert((strDest != NULL) && (strSrc != NULL));
 4     char *address = strDest;
 5     while((*strDest++ = *strSrc++) != '\0')
 6     NULL;
 7     return address;
 8 }
 9 

strcpy 返回char *是爲了實現鏈式表達式。好比 int length = strlen(strcpy(strDest, "hello,world"));