1 00:00:00,000 --> 00:00:03,250 >> SPIKA 1: Hebu sasa kuandika mpango wao kweli kulinganisha na masharti mawili 2 00:00:03,250 --> 00:00:04,245 tabia kwa tabia. 3 00:00:04,245 --> 00:00:06,830 Hebu kutumia kulinganisha 0 kama yetu kuanzia. 4 00:00:06,830 --> 00:00:11,550 Lakini hebu peel ya kwanza ya nyuma safu kwamba ni ya aina kamba na kuandika upya ni 5 00:00:11,550 --> 00:00:14,120 kwa nini ni kweli ni, ambayo ni nyota char. 6 00:00:14,120 --> 00:00:17,740 Hiyo ni anwani ya tabia, hasa tabia ya kwanza katika 7 00:00:17,740 --> 00:00:21,010 mlolongo wa wahusika kwamba tunatarajia zaidi kwa ujumla kujua kama kamba. 8 00:00:21,010 --> 00:00:21,880 >> Same kwa t. 9 00:00:21,880 --> 00:00:25,660 Hebu kuandika upya kwamba kamba tamko kama char nyota. 10 00:00:25,660 --> 00:00:28,690 Na sasa tunahitaji tena kulinganisha dhidi ya t, ili 11 00:00:28,690 --> 00:00:30,150 sisi kulinganisha anwani mbili. 12 00:00:30,150 --> 00:00:33,180 Tunataka kweli kulinganisha masharti mawili wenyewe. 13 00:00:33,180 --> 00:00:37,520 Kwa kufanya hivyo, tunaweza kutumia kazi alitangaza katika string.h. 14 00:00:37,520 --> 00:00:40,920 Basi, mimi itabidi kuongeza kuwa ni pamoja na juu ya faili yangu. 15 00:00:40,920 --> 00:00:43,130 >> Na kisha mimi nina kwenda na mabadiliko ya line hii hapa. 16 00:00:43,130 --> 00:00:47,920 Badala ya kulinganisha dhidi ya t, mimi nina kwenda kuwaita kazi koroga Comp, 17 00:00:47,920 --> 00:00:52,290 kwa kamba kulinganisha, na kupita katika kama hoja s na t. 18 00:00:52,290 --> 00:00:56,480 Tutaweza kuahirisha kisha kwa kamba kulinganisha na kufikiri kama s na t kweli ni sawa 19 00:00:56,480 --> 00:00:59,870 na basi ni kufikiri jinsi ya kulinganisha yao tabia kwa tabia. 20 00:00:59,870 --> 00:01:02,410 >> Sasa, kulingana na nyaraka kwa kamba kulinganisha, ni kweli 21 00:01:02,410 --> 00:01:06,920 kwenda na kurudi 0 ikiwa masharti mawili alisema katika na s na t ni sawa. 22 00:01:06,920 --> 00:01:09,490 Ni kwenda na kurudi namba hasi kama s waje kabla ya t 23 00:01:09,490 --> 00:01:13,740 alphabetically au idadi chanya kama s waje baada ya t alphabetically. 24 00:01:13,740 --> 00:01:16,090 >> Lakini kwa sasa, sisi tu huduma kuhusu usawa. 25 00:01:16,090 --> 00:01:19,270 Hivyo mimi nina kwenda kupima tu kama thamani ya kurudi kamba kulinganisha, 26 00:01:19,270 --> 00:01:21,450 kupita katika s na t, ni sawa na 0. 27 00:01:21,450 --> 00:01:24,940 Na kama ni hivyo, mimi nina kwenda kudai kwamba masharti mawili ni sawa. 28 00:01:24,940 --> 00:01:26,820 >> Lakini mimi nina kwenda kufanya moja mabadiliko mengine pia. 29 00:01:26,820 --> 00:01:30,410 Ni zamu nje kamba kwamba kupata, kwa yake nyaraka, wakati mwingine kurudi 30 00:01:30,410 --> 00:01:34,320 null, mwangalizi thamani kwamba, kwa mujibu kupata masharti nyaraka, njia 31 00:01:34,320 --> 00:01:35,450 kitu mbaya kilichotokea. 32 00:01:35,450 --> 00:01:38,830 Kwa mfano, sisi mbio nje ya kumbukumbu au user kwa namna fulani hakuwa kushirikiana. 33 00:01:38,830 --> 00:01:41,080 >> Kamba kulinganisha, wakati huo huo, ni kidogo tete. 34 00:01:41,080 --> 00:01:44,730 Kama kupita null kwa aidha yake kwanza au hoja ya pili yake, mbaya 35 00:01:44,730 --> 00:01:45,650 mambo yanaweza kutokea. 36 00:01:45,650 --> 00:01:47,970 Mambo mabaya kwa kawaida kuwashirikisha segmentation makosa. 37 00:01:47,970 --> 00:01:52,210 Hivyo ili kuepuka uwezekano kwamba kabisa, Mimi kwanza kwenda kufuta hii matumizi ya 38 00:01:52,210 --> 00:01:56,350 kamba kulinganisha na indenting yote hii kuzuia wa kanuni na ya kwanza kufanya tu 39 00:01:56,350 --> 00:02:03,140 kwamba kama s si sawa na null na t si sawa na null. 40 00:02:03,140 --> 00:02:08,280 >> Kumalizika kwa mpango kwamba kama mwingine kujenga kwamba mimi typed mapema na braces curly kama 41 00:02:08,280 --> 00:02:12,270 vizuri, hivyo kwamba wakati huu mimi tu kugusa s na t kama mimi nina uhakika kwamba 42 00:02:12,270 --> 00:02:13,450 wao ni si null. 43 00:02:13,450 --> 00:02:17,220 Hebu sasa kuokoa, kukusanya, na tena kuendesha mpango huu. 44 00:02:17,220 --> 00:02:22,240 >> Kufanya kulinganisha 1 dot slash kulinganisha 1. 45 00:02:22,240 --> 00:02:23,950 Mimi itabidi kusema hello tena. 46 00:02:23,950 --> 00:02:25,890 Ikifuatiwa na hujambo tena. 47 00:02:25,890 --> 00:02:28,110 Na wakati huu, mimi kweli aina kitu kimoja. 48 00:02:28,110 --> 00:02:30,255