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unsigned        --           char          8          0 ~ 2^8-1       %c         %c¡¢%d¡¢%u
[signed]        short        [int]         16         -2^15 ~ 2^15-1               %hd
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extern C µÄ×÷ÓÃ

extern "C" ÊÇ C++ ±àÒëÆ÷Ö§³ÖµÄÒ»ÖÖÁ´½Óָʾ·û£¨linkage directive£©£¬Ëü±íʾÓÉÆäÉùÃ÷µÄº¯ÊýʹÓà C ÓïÑԵķ½Ê½±àÒëºÍÁ´½Ó¡£
C ºÍ C++ ¶Ôº¯Êý±àÒëºó²úÉúµÄ·ûºÅÃûÊDz»Ò»ÑùµÄ¡£¼ÙÉèÒ»¸öº¯ÊýµÄÔ­ÐÍΪ:
void foo(int x, int y);
ÓÉ C ±àÒëÆ÷±àÒëºó²úÉúµÄ·ûºÅÃûΪ _foo£¬¶ø C++ ÓÉÓÚÖ§³ÖÖØÔØµÄÐèÒª£¬±àÒëºóµÄ·ûºÅà ......

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