predstavlenie dannix v yazike c++.

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ministerstvo visshego i srednego spetsialnogo obrazovaniya respubliki uzbekistan ___________________________ universitet fakultet:“___________________________________” napravlenie:“_________________________________” samostoyatelnaya rabota _________ gruppi tema: _______________________________ _______________________________ sdal(a): _______________ prinyal(a): _______________ tema: predstavlenie dannix v yazike c++. soderjanie 1. kontseptsiya tipov dannix 2. osnovnie tipi dannix 3. tseliy tip (int) 4. simvolniy tip (char) 5. logicheskiy tip (bool) 6. tip void 7. simvolnie tipi 8. tipi chisel s plavayushey tochkoy 9. zaklyuchenie 10. spisok literaturi kontseptsiya tipov dannix kompyuter simvolniy logicheskiy informatsiya osnovnaya tsel lyuboy programmi sostoit v obrabotke dannix. dannie razlichnogo tipa xranyatsya i obrabativayutsya po-raznomu. v lyubom algoritmicheskom yazike kajdaya konstanta, peremennaya, rezultat vichisleniya virajeniya ili funktsii doljni imet opredelenniy tip. tip dannix opredelyaet: · vnutrennee predstavlenie dannix v pamyati kompyutera; · mnojestvo znacheniy, kotorie mogut prinimat velichini etogo tipa; · operatsii i funktsii, kotorie mojno primenyat k velichinam etogo tipa. isxodya iz etix xarakteristik, programmist vibiraet tip kajdoy velichini, ispolzuemoy v programme dlya predstavleniya realnix …

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nazivayut arifmeticheskimi, poskolku ix mojno ispolzovat v arifmeticheskix operatsiyax. dlya opisaniya osnovnix tipov opredeleni sleduyushie klyuchevie slova: · int (tseliy); · char (simvolniy); · wchar_t (rasshirenniy simvolniy); · bool (logicheskiy); · float (veshestvenniy); · double (veshestvenniy s dvoynoy tochnostyu). pervie chetire tipa nazivayut tselochislennimi (tselimi), poslednie dva - tipami s plavayushey tochkoy. kod, kotoriy formiruet kompilyator dlya obrabotki tselix velichin, otlichaetsya ot koda dlya velichin s plavayushey tochkoy. sushestvuet chetire spetsifikatora tipa, utochnyayushix vnutrennee predstavlenie i diapazon znacheniy standartnix tipov: · short (korotkiy); · long (dlinniy); · signed (znakoviy); · unsigned (bezznakoviy). tseliy tip (int) razmer tipa int ne opredelyaetsya standartom, a zavisit ot kompyutera i kompilyatora. dlya 32-razryadnogo protsessora pod velichini etogo tipa otvoditsya 4 bayta. spetsifikator short pered imenem tipa ukazivaet kompilyatoru, chto pod chislo trebuetsya otvesti 2 bayta nezavisimo ot razryadnosti protsessora. spetsifikator long oznachaet, chto tselaya velichina budet zanimat 4 bayta. vnutrennee predstavlenie velichini tselogo tipa …

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moshyu suffiksov l, 1 (long) i u, u (unsigned). naprimer, konstanta 32l budet imet tip long i zanimat 4 bayta. mojno ispolzovat suffiksi l i u odnovremenno, naprimer, 0x22ul ili 05lu. primechanie. tipi short int, long int, signed int i unsigned int mojno sokrashat do short, long, signed i unsigned sootvetstvenno. simvolniy tip (char) pod velichinu simvolnogo tipa otvoditsya kolichestvo bayt, dostatochnoe dlya razmesheniya lyubogo simvola iz nabora simvolov. kak pravilo, eto 1 bayt. tip char, kak i drugie tselie tipi, mojet bit so znakom ili bez znaka. v velichinax so znakom mojno xranit znacheniya v diapazone ot -128 do 127. pri ispolzovanii spetsifikatora unsigned znacheniya mogut naxoditsya v predelax ot 0 do 255. etogo dostatochno dlya xraneniya lyubogo simvola iz 256-simvolnogo nabora ascii. velichini tipa char primenyayutsya takje dlya xraneniya tselix chisel, ne previshayushix granitsi ukazannix diapazonov. rasshirenniy simvolniy tip (wchart) tip wchar_t prednaznachen dlya raboti s naborom simvolov …

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23 pod mantissu. mantissa - eto chislo, bolshee 1.0, no menshee 2.0. poskolku starshaya tsifra mantissi vsegda ravna 1, ona ne xranitsya. dlya velichin tipa double, zanimayushix 8 bayt, pod poryadok i mantissu otvoditsya 11 i 52 razryada sootvetstvenno. dlina mantissi opredelyaet tochnost chisla, a dlina poryadka - ego diapazon. kak mojno videt iz tabl. 4, pri odinakovom kolichestve bayt, otvodimom pod velichini tipa float i long int, diapazoni ix dopustimix znacheniy silno razlichayutsya iz-za vnutrenney formi predstavleniya. pod velichinu tipa long double otvoditsya 10 bayt. konstanti s plavayushey tochkoy imeyut po umolchaniyu tip double. mojno yavno ukazat tip konstanti s pomoshyu suffiksov f, f (float) i l, 1 (long). naprimer, konstanta 2e+6l budet imet tip long double, a konstanta 1.82f - tin float. tablitsa 4. diapazoni znacheniy prostix tipov dannix tip diapazon znacheniy razmer (bayt) bool true i false 1 signed char -128 ... 127 1 unsigned char 0 …

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$first solution cout int main() { // objects of type int int value = 2; int pow = 10; cout 0; --exp ) res = res * val; return res; } teper poluchit lyubuyu stepen nujnogo chisla ne sostavit nikakogo truda. vot kak realizuetsya poslednyaya nasha zadacha – napechatat tablitsu stepeney dvoyki ot 0 do 15: #include extern int pow(int,int); int main() { int val = 2; int exp = 15; cout << "stepeni 2\n"; for ( int cnt=0; cnt <= exp; ++cnt ) cout << cnt << ": " << pow( val, cnt ) << endl; return 0; } konechno, nasha funktsiya pow() vse eshe nedostatochno obobshena i nedostatochno nadejna. ona ne mojet operirovat veshestvennimi chislami, nepravilno vozvodit chisla v otritsatelnuyu stepen – vsegda vozvrashaet 1. rezultat vozvedeniya bolshogo chisla v bolshuyu stepen mojet ne pomestitsya v peremennuyu tipa int, i togda budet vozvrasheno nekotoroe sluchaynoe nepravilnoe znachenie. vidite, …$

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ministerstvo visshego i srednego spetsialnogo obrazovaniya respubliki uzbekistan ___________________________ universitet fakultet:“___________________________________” napravlenie:“_________________________________” samostoyatelnaya rabota _________ gruppi tema: _______________________________ _______________________________ sdal(a): _______________ prinyal(a): _______________ tema: predstavlenie dannix v yazike c++. soderjanie 1. kontseptsiya tipov dannix 2. osnovnie tipi dannix 3. tseliy tip (int) 4. simvolniy tip (char) 5. logicheskiy tip (bool) 6. tip void 7. simvolnie tipi 8. tipi chisel s plavayushey tochkoy 9. zaklyuchenie 10. spisok literaturi kontseptsiya tipov dannix kompyuter simvolniy logicheskiy informatsiya osnovnaya tsel lyuboy programmi sostoit v obrabotke dannix. dannie ra...

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