Ulusebenzisa njani ulwakhiwo-lwamatyala olwakhiwo lwezigqibo ezininzi zoKhetho kwiNkqubo ye-C

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Ukufumba inqaba ye if kunye nezinye iingxelo kwiinkqubo ze-C zinokusebenza, kodwa ayisiyondlela ilungileyo yokuhamba ngesigqibo sokukhetha ezininzi. Isisombululo esibonelelwe ngolwimi lwe-C saziwa njengesakhiwo secala lokutshintsha.



Uyenza njani into yokhetho oluninzi olunokutshintsha imeko yetyala

Inkqubo ye- ityala lokutshintsha ulwakhiwo ikuvumela ukuba ukhowudi izigqibo kwinkqubo ye-C esekwe kwixabiso elinye. Yinkcazo yokukhetha ukhetho oluninzi.



UKHETHO OLUNINZI

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#include int main() { int code; printf('Enter the error code (1-3): '); scanf('%d',&code); switch(code) { case 1: puts('Drive Fault, not your fault.'); break; case 2: puts('Illegal format, call a lawyer.'); break; case 3: puts('Bad filename, spank it.'); break; default: puts('That's not 1, 2, or 3'); } return(0); }

Zilolonge 1: Yenza iprojekthi entsha usebenzisa ikhowudi kwi-Multiple Choice. Chwetheza nje kuyo. Yakha. Yisebenzise amaxesha ambalwa, uzama amaxabiso awahlukeneyo ukubona ukuba iphendula njani.



Vavanya ikhowudi yemvelaphi kumhleli wakho, apho unokujonga khona amanani emigca ekhankanywe kwezi ziqendu zilandelayo.

Ulwakhiwo lwecala lokutshintsha luqala kuMgca we-10 ngengxelo yokutshintsha. Into eyivavanyayo ifakwe ngaphakathi kubazali. Ngokungafaniyo nengxelo, ukuba utshintsho lutya kuphela ixabiso elinye. Kumgca we-10, linani elipheleleyo lokuba iintlobo zomsebenzisi (zifunde kumgca we-8).

Icandelo letyala lesakhiwo lifakwe kwizibiyeli ezigobileyo, phakathi kweMigca ye-11 neye-23. Ingxelo yetyala ibonisa ixabiso elinye, elingu-1 kuMgca we-12. Ixabiso lilandelwa likholoni.



Ixabiso elichazwe kwimeko nganye lithelekiswa nento echazwe kwisitatimende sokutshintsha. Ukuba amaxabiso ayalingana, iingxelo zetyala ziyenziwa. Ukuba akunjalo, bayatsiba kwaye ixabiso letyala elilandelayo lithelekiswa.

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Igama eliphambili lekhefu liyeke ukuhamba kwenkqubo ngakwicala lokutshintsha. Ukuhamba kwenkqubo kuyaqala kwakhona emva kobume bokutshintsha kwesakhelo sokugqibela, esiyiLayini 24 kukhetho oluninzi.

Emva kokuthelekisa okokugqibela, imeko yewotshi isebenzisa i emiselweyo into, eboniswe kumgca we-21. Ezi ngxelo zento ziyenziwa xa kungekho meko ithelekiswayo. Inkqubo ye- emiselweyo into iyafuneka kulwakhiwo lwecala lokutshintsha.

Ukuzilolonga 2 : Yenza inkqubo usebenzisa ikhowudi yemvelaphi efanayo kuLuhlu 8-8, kodwa wenze igalelo ngonobumba KU, B, kwaye C .

  • Ukuthelekiswa okwenziwe kulwakhiwo lwecala lokutshintsha kuphakathi kwento echazwe kwi-parentheses yotshintsho kunye nento elandelayo igama ngalinye elingundoqo. Xa uthelekiso luyinyani, oko kuthetha ukuba zombini izinto ziyalingana enye nenye, iingxelo zetyala ziyenziwa.

  • Igama eliphambili lekhefu lisetyenziselwa ukwaphula ukuhamba kwenkqubo. Ingasetyenziselwa ukwakhiwa nayo, kodwa ubukhulu becala ifunyenwe kwizakhiwo zokutshixa.

  • Chaza ikhefu emva kwengxelo yokuthelekisa imeko ukuze lonke ulwakhiwo lungaphunyezwa.

Inkqubo ye- ityala lokutshintsha ulwakhiwo kwinkqubo yeC

Kwaye ngoku-ukubonisa eyona nto inzima kwi-C. Ngokuzimisela, uyakufumana imigaqo kunye nolwakhiwo nge-switch-case kunayo nayiphi na enye into eyakhiwe ku-C. Nalu ulusu lwamathambo:

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switch(  expression  ) { case  value1  :  statement  (s); break; case  value2  :  statement  (s); break; case  value3  :  statement  (s); break; default:  statement  (s); }

Into yotshintsho yazisa ulwakhiwo, oluvalwe ngeebakaki ezijijekileyo. Ulwakhiwo kufuneka okungenani lube nengxelo enye yecala kunye nengxelo emiselweyo.

Isiteyitimenti sokutshintsha siqulathe intetho kubakaki. Elo binzana kufuneka livavanye kwixabiso elinye. Inokuba iyantlukwano, ixabiso elibuyiswe emsebenzini, okanye ukusebenza kwemathematics.

Ingxelo yetyala ilandelwa lixabiso elikhawulezileyo emva koko ikholoni. Ukulandela ikholoni yingxelo enye okanye nangaphezulu. Ezi nkcazo ziyenziwa xa ixabiso elikhawulezileyo elilandelayo lilandela imeko yesitetimenti sokutshintsha. Ngaphandle koko, iingxelo zitsibiwe, kwaye ingxelo yecala elandelayo iyavavanywa.

Igama eliphambili lekhefu lisetyenziselwa ukubaleka imeko yotshintsho. Ngaphandle koko, ukwenziwa kwenkqubo kuwela kulwakhiwo.

Into emiselweyo iqukumbela imeko yotshintsho. Inezitetimenti ezenziweyo xa kungekho nalinye lala matyala alinganayo. Okanye, xa kungekho nto ishiyelweyo ukuba yenziwe, into emiselweyo ayifuni naziphi na iingxelo- kodwa kufuneka icacisiwe.

Inxalenye yecala lolwakhiwo lwamatyala alwenzi uvavanyo. Ukuba ufuna uthelekiso oluninzi, sebenzisa uninzi ukuba lolunye uhlobo lolwakhiwo.

Uyakha njani imeko yecala lokutshintsha ngaphandle kwekhefu

Kuyenzeka ukuba kwakhiwe imeko yewotshi ngaphandle kwengxelo zekhefu. Into enjalo inokuba luncedo phantsi kweemeko ezizodwa.

IZIGQIBO ZESICELO SOKUDLA

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#include int main() { char choice; puts('Meal Plans:'); puts('A - Breakfast, Lunch, and Dinner'); puts('B - Lunch and Dinner only'); puts('C - Dinner only'); printf('Your choice: '); scanf('%c',&choice); printf('You've opted for '); switch(choice) { case 'A': printf('Breakfast, '); case 'B': printf('Lunch and '); case 'C': printf('Dinner '); default: printf('as your meal plan.n'); } return(0); }

Umthambo 3 : Yenza iprojekthi entsha usebenzisa ikhowudi yemvelaphi kwizigqibo zesicwangciso sokutya. Yakha kwaye usebenze.

Ukuzilolonga 4 : Ukuba uyayiqonda indlela iingxelo zamatyala ezinokuwa ngayo, lungisa ukuzivocavoca 2 ukuze oonobumba abakhulu nabancinci bavavanywe kulwakhiwo lwamatyala.