1 00:00:00,000 --> 00:00:00,660 2 00:00:00,660 --> 00:00:03,890 >> SPIKA: Kumbuka kwamba katika C, kila data aina na ukubwa fulani. 3 00:00:03,890 --> 00:00:07,560 Lakini hiyo ukubwa vizuri sana kutofautiana msingi juu ya kompyuta ambayo unatumia 4 00:00:07,560 --> 00:00:12,070 C. Sasa, sisi kutokea kwa kutumia C ndani ya ya CS50 appliance, hivyo ndani ya 5 00:00:12,070 --> 00:00:14,210 appliance, jinsi kubwa ni char? 6 00:00:14,210 --> 00:00:15,270 Jinsi kubwa ni mara mbili? 7 00:00:15,270 --> 00:00:16,430 Jinsi kubwa ni int? 8 00:00:16,430 --> 00:00:17,790 Jinsi kubwa ni kuelea? 9 00:00:17,790 --> 00:00:20,530 >> Naam, hebu tuangalie na baadhi ya kanuni. 10 00:00:20,530 --> 00:00:26,760 Pamoja na kiwango io.h, int kuu ni batili. 11 00:00:26,760 --> 00:00:29,100 Na sasa hebu kuanza kutangaza vigezo chache ambao 12 00:00:29,100 --> 00:00:31,330 ukubwa tutaweza kisha magazeti - 13 00:00:31,330 --> 00:00:38,490 char c, d mara mbili, kuelea f, na int i. 14 00:00:38,490 --> 00:00:41,180 Sasa, mimi nina si kwenda kuhifadhi maadili yoyote katika mambo haya, kwa sababu mimi tu 15 00:00:41,180 --> 00:00:43,060 huduma ya juu kawaida yao fulani. 16 00:00:43,060 --> 00:00:46,870 >> Kuona ukubwa wao, mimi itabidi kutumia magazeti f, kama vizuri kama C operator aitwaye ukubwa 17 00:00:46,870 --> 00:00:49,600 ya, ambayo kujibu hasa kwamba swali. 18 00:00:49,600 --> 00:00:50,900 Hebu tuangalie. 19 00:00:50,900 --> 00:00:56,590 Magazeti f char, ikifuatiwa na koloni, asilimia 1, backslash n. 20 00:00:56,590 --> 00:01:00,680 Kwa maneno mengine, nataka magazeti nje char koloni, ikifuatiwa na ukubwa wake. 21 00:01:00,680 --> 00:01:05,540 >> Kwa hiyo nitakuwa pamoja na comma ikifuatiwa na ukubwa wa c. 22 00:01:05,540 --> 00:01:07,780 Hebu sasa kufanya hivyo tena kwa mara mbili. 23 00:01:07,780 --> 00:01:16,090 Magazeti f, mbili, asilimia i, backslash n, quote karibu, comma, ukubwa wa d. 24 00:01:16,090 --> 00:01:19,885 Sasa angalia, mimi nina kwenda kuendelea kutumia asilimia i, na hivyo akionyesha 25 00:01:19,885 --> 00:01:23,440 int, kwa sababu kile si kubadilisha ni vitengo ambayo mimi nina kupima 26 00:01:23,440 --> 00:01:25,140 ukubwa wa vigezo hivi. 27 00:01:25,140 --> 00:01:28,760 >> Kwa kweli, ukubwa wa ni kwenda na kurudi baadhi idadi ya ka, labda moja, labda 28 00:01:28,760 --> 00:01:29,990 mbili, labda zaidi. 29 00:01:29,990 --> 00:01:32,500 Lakini katika kila kesi, itakuwa kweli nipe int. 30 00:01:32,500 --> 00:01:35,640 Na hiyo ilikuwa mmiliki mahali nataka kutumia, bila ya kujali aina, 31 00:01:35,640 --> 00:01:37,130 ambao kawaida mimi nina kupata. 32 00:01:37,130 --> 00:01:39,290 Hebu kufanya mbili zaidi magazeti f ya. 33 00:01:39,290 --> 00:01:45,950 >> Float, asilimia i, backslash n, ukubwa wa f. 34 00:01:45,950 --> 00:01:53,250 Print f, int, asilimia I, backslash n, ukubwa wa i. 35 00:01:53,250 --> 00:01:56,410 Hebu sasa kuokoa, kukusanya, na kuendesha mpango huu. 36 00:01:56,410 --> 00:02:02,960 Kufanya, ukubwa wa, dot slash, ukubwa wa, na tunaona kwamba katika CS50 appliance, a 37 00:02:02,960 --> 00:02:08,500 char ni byte moja, mbili ni nane ka, kuelea ni 4 ka, na int 38 00:02:08,500 --> 00:02:09,750 ni ka nne, kama vile. 39 00:02:09,750 --> 00:02:10,401