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
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
& ......
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 ......
¡¡¡¡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/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 ......
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 ......