Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

C¿âº¯Êý×Ö·û´®´¦Àíº¯ÊýµÄCʵÏÖ(³£¼û)

1.strlen()
ʵÏÖ£º
    size_t  strlen(const char *s)
    {
       size_t n;
       for(n = 0; *s != '\0'; s++)
          ++n;
       return n;
    }
2.strcpy()
ʵÏÖ;
    char *strcpy(char *s1, register const char *s2)
    {
       register const char *p = s1;
       while(*p++ = *s2++)
          ;
       return s1;
    }
·ÖÎö;
    Õâ¸öwhileÑ­»·ÊǸö¿ÕÑ­»·£¬ËùÓе͝×÷¶¼ÊÇ×÷ΪwhileÑ­»·µÄ¿ØÖƱí´ïʽµÄ¸±×÷ÓÃÍê³ÉµÄ¡£
    while(*p++ = *s2++)£¬pËùÖ¸ÏòµÄ×Ö·û±»¸³ÖµÎªs2ËùÖ¸ÏòµÄ×Ö·û£¬È»ºópºÍs2¶¼½øÐÐÔöÖµ£¬Ö¸ÏòÏÂÒ»¸ö×Ö·û£¬ÖªµÀs2Ö¸ÏòµÄ×Ö·ûÊÇ'\0'£¨ÆäֵΪ0£©¡£µ±Õâ¸ö0¸³¸øpËùÖ¸ÏòµÄ×Ö·ûʱ£¬Ï൱ÓÚÉèÖÃÁË×Ö·û´®½áÊø±êÖ¾£¬²¢ÇÒÕû¸ö±í´ïʽµÄֵΪ0£¬Í˳öÑ­»·¡£
    ËùÓвÙ×÷µÄЧ¹ûÊǰÑ×Ö·û´®s2¸´ÖƸøs1¡£
3.strcat()
ʵÏÖ£º
    char *strcat(char *s1, register const char *s2)
    {
       register char *p =s1;
       while(*p)
          ++p;
       while(*p++ = *s2++)
          ;
       return s1;
    }
·ÖÎö;
    ʹÓÃregister´æ´¢ÀàÐÍÊÇΪÁË»ñµÃ×î¿ìµÄÖ´ÐÐËÙ¶È¡£


Ïà¹ØÎĵµ£º

CºÍÖ¸Õëѧϰ±Ê¼Ç£¨1£©

       1¡¢ ¾­³£¿´¼ûreturn EXIT_SUCCESS»òreturn EXIT_FAILURE£¬µ«¶¼²»ÖªÕâÁ½¸öÀ´×Ժ䦣¬ÏÖÔÚ²ÅÖªÔ­À´stdlib.h¶¨ÒåÁËEXIT_SUCCESSºÍEXIT_FAILURE·ûºÅ¡£
ÔÚstdlib.hÍ·ÎļþÀ
#define EXIT_SUCCESS    0
#define EXIT_FAILURE    1
    & ......

CÁ·Ï°Ìâ

1.  ¸ø¶¨µÈʽ  A B C D E     ÆäÖÐÿ¸ö×Öĸ´ú±íÒ»¸öÊý×Ö£¬ÇÒ²»Í¬Êý×Ö¶ÔÓ¦²»
                    D F G    &nbs ......

C/C++Êý×éÃûÓëÖ¸ÕëÇø±ðÉîÈë̽Ë÷

¡¡¡¡ÒýÑÔ
¡¡¡¡Ö¸ÕëÊÇC/C++ÓïÑÔµÄÌØÉ«£¬¶øÊý×éÃûÓëÖ¸ÕëÓÐÌ«¶àµÄÏàËÆ£¬ÉõÖÁºÜ¶àʱºò£¬Êý×éÃû¿ÉÒÔ×÷ΪָÕëʹÓá£ÓÚÊǺõ£¬ºÜ¶à³ÌÐòÉè¼ÆÕ߾ͱ»¸ãºýÍ¿ÁË¡£¶øÐí¶àµÄ´óѧÀÏʦ£¬ËûÃÇÔÚCÓïÑԵĽÌѧ¹ý³ÌÖÐÒ²´íÎóµÃ¸øÑ§Éú½²½â£º"Êý×éÃû¾ÍÊÇÖ¸Õë"¡£ºÜÐÒÔË£¬ÎҵĴóѧÀÏʦ¾ÍÊÇÆäÖÐÖ®Ò»¡£Ê±ÖÁ½ñÈÕ£¬ÎÒÈÕ¸´Ò»ÈյؽøÐÐ×ÅC/C++ÏîÄ¿µÄ¿ª·¢£¬¶øÉ ......

c ms/ºÁÃë¼¶ ¼ÆÊ± ¼°time.h ÆäËüº¯ÊýÏê½â

C/C++ÖеÄÈÕÆÚºÍʱ¼ä
ͻ񻣼
±¾ÎÄ´Ó½éÉÜ»ù´¡¸ÅÄîÈëÊÖ£¬Ì½ÌÖÁËÔÚC/C++ÖжÔÈÕÆÚºÍʱ¼ä²Ù×÷ËùÓõ½µÄÊý¾Ý½á¹¹ºÍº¯Êý£¬²¢¶Ô¼ÆÊ±¡¢Ê±¼äµÄ»ñÈ¡¡¢Ê±¼äµÄ¼ÆËãºÍÏÔʾ¸ñʽµÈ·½Ãæ½øÐÐÁ˲ûÊö¡£±¾ÎÄ»¹Í¨¹ý´óÁ¿µÄʵÀýÏòÄãչʾÁËtime.hÍ·ÎļþÖÐÉùÃ÷µÄ¸÷ÖÖº¯ÊýºÍÊý¾Ý½á¹¹µÄÏêϸʹÓ÷½·¨¡£
¹Ø¼ü×Ö£º
UTC£¨ÊÀ½ç±ê׼ʱ¼ä£©£¬Calendar Ti ......

LinuxÏÂC¿ª·¢Ö®gcc,gdbµÄʹÓÃ

gcc£¬gdbµÄʹÓÃ
×÷Õߣºzccst
 
ÉÏÖÜÎåÔÚͼÊé¹Ý½èÁËÒ»±¾¡¶LinuxÈí¼þ¹¤³Ìʦ£¨CÓïÑÔ£©ÊµÓý̡̳·£¬ÈÃÎÒÊÕ»ñÁ¼¶à¡£²»½ö½öÊÇÊéÖеÄ֪ʶ£¬»¹ÓжÔ֪ʶÌåϵºÍ¼Ü¹¹ÈÏʶµÄÉîÈë¡£
 
LinuxÏÂC¿ª·¢£º
1£¬gcc,gdbµÄʹÓá£
2£¬MakefileÎļþµÄ±àд¡£
3£¬ÏµÍ³º¯ÊýµÄʹÓÃ
4£¬Îļþ²Ù×÷
5£¬´®ÐÐͨÐÅ
6£¬½ø³Ì¿ØÖÆ
7£¬½ø³Ì¼ ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ