第1⑵章 变量和基本类型
1.下面这个语句在C++98和C++11中的输出结果不同.
C++98结果:
(如果想要更高的精度,可以用%.9lf,输出9位有效数字)
C++11结果:
结论:
printf的%lf在C++11中表示longdouble,所以用中%f就能够输出float和double类型.而printf在C++98中可以用%lf正确输出double.
如果是scanf的话,不论C++98还是C++11中float都用%f读取,double都用%lf读取,由于2者结构不同.
2. 默许初始化
定义变量时没有指定初值,变量被默许初始化.
内置类型:如果是全局的(变量),那末就初始为0.如果是局部的,那末值不肯定.
类类型:得看该类对象是否是全局的和该类的默许构造函数了.
2.1如果该类的默许构造函数不支持定义对象不给定初值,那末就报错.
2.2如果支持定义对象不给初值,那末就履行默许构造函数的初始化.
2.3如果该类用的是合成的默许构造函数,那末就履行默许初始化.默许初始化时,对成员是对象的履行它的默许构造函数(有点递归的意思),对成员是内置类型的履行默许初始化(全局置0,局部未定义)
上面的结果可以看出,s成员始终都是空串.而a对象和b对象的int
a和 int b成员 由于位置不同,值也不同.
3. 如何定义1个指向指针的援用:
4. const变量是仅在当前文件内有效的,那末我们如何定义且使用全局const呢?
在1个文件如 extern const int a=100;定义,在其他所有需要用到a的文件内声明如 extern const int a;
Add.h文件
Add.cpp文件
main.cpp文件
其实这个与我们第1章定义全局变量有点类似.
5. auto与decltype用法的区分。
auto会消除顶层const,decltype不会。
对援用类型,auto得到1个普通类型,decltype得到援用。
decltype((i))时得到的是i类型的援用,decltype(i)得到i类型。
波比源码 » C++ Primer学习总结 第1-2章 变量和基本类型
levaquin pills levaquin online
avodart usa tamsulosin drug order ondansetron 8mg online
buy spironolactone online cheap fluconazole 100mg sale diflucan 200mg oral
order fildena 100mg online order generic tamoxifen 20mg robaxin pills
buy sildenafil 100mg order aurogra sale purchase estradiol generic
lamotrigine brand buy vermox 100mg generic tretinoin gel drug
generic tadalafil order tadalafil 10mg online cheap voltaren pills
order isotretinoin 20mg isotretinoin us cost zithromax 250mg
indocin without prescription amoxicillin online buy purchase amoxicillin without prescription
usa cialis overnight vacuum pump for ed buy sildenafil 50mg generic
acheter gГ©nГ©rique tadalafil en france sildenafil 50mg comprimГ© sildenafil 100mg pour homme
isotretinoin 40mg cost amoxil brand ivermectin 0.5 lotion
doxycycline 100mg uk buy vardenafil pills buy lasix 40mg generic
clonidine 0.1 mg usa cheap catapres 0.1 mg order spiriva 9mcg online
buspirone brand purchase buspar generic oxybutynin tablet
buy fosamax online cheap buy panadol 500 mg generic famotidine 40mg usa
buy bupropion 150mg generic bupropion 150mg cost order quetiapine 50mg pills
order generic molnupiravir 200mg order naproxen 500mg without prescription lansoprazole 30mg canada
order zoloft generic Buy viagra viagra online
imuran 100mcg drug viagra 50mg price cheap generic sildenafil
order tadalafil 10mg pills cialis 5mg pill symmetrel without prescription
brand naltrexone 50mg albendazole 400mg cost abilify 20mg uk
dapsone without prescription dapsone price cost perindopril 8mg
nootropil 800mg sale generic sildenafil 100mg sildenafil 100mg sale
cialis pharmacy cialis walmart order viagra pill
cheap lasix 100mg buy furosemide generic buy plaquenil 200mg generic
buy aralen for sale buy cenforce 50mg generic order baricitinib without prescription
glucophage price tadalafil uk order tadalafil pill
zyprexa drug olanzapine 10mg ca order diovan 80mg generic
norvasc 10mg pill female viagra pill cialis 5mg for sale
clozapine buy online buy combivent without prescription decadron online
order sildenafil for sale order lisinopril 2.5mg generic order lisinopril 2.5mg generic
order omeprazole 20mg pills online casino gambling big fish casino online
purchase zyvox online buy linezolid 600mg that roulette
metoprolol 100mg brand vardenafil over the counter brand levitra 20mg
buy an essay online cheap academic writing blog gambling addiction
buy an essay online custom research paper writing viagra 100mg uk
buy clomiphene 50mg online clomid over the counter free roulette online
buy cialis 40mg online cheap cialis 40mg oral cheap viagra
buy aristocort 10mg for sale desloratadine 5mg pill order clarinex pill
order dapoxetine 60mg generic brand misoprostol 200mcg purchase synthroid pills
order tadalafil 40mg viagra fast shipping sildenafil 50mg us
order orlistat generic diltiazem 180mg oral acyclovir 800mg over the counter
order generic cialis 5mg clopidogrel brand plavix 150mg pills
order zyloprim online cheap buy zyloprim 300mg pills order zetia 10mg online
order domperidone 10mg online cyclobenzaprine 15mg uk flexeril 15mg without prescription
buy losartan pill order losartan 50mg pill topiramate drug
order baclofen 10mg online toradol 10mg uk toradol 10mg tablet
imitrex 25mg ca order sumatriptan sale avodart 0.5mg drug
cheap colchicine 0.5mg gambling casino casino moons online casino
purchase zantac online cheap buy zantac for sale celecoxib 100mg oral
casino slot free roulette free play for fun real casino online
tadalafil 40mg for sale tadalafil 5mg uk cipro buy online
buy simvastatin 20mg generic propecia online buy purchase finasteride online cheap
order cephalexin online cheap buy keflex for sale erythromycin 500mg usa
buy generic ceftin 500mg ceftin 250mg price robaxin pills
buy thesis paper buy stromectol 6mg generic ivermectin order
prednisone 40mg generic order amoxil generic order amoxil 1000mg online cheap
order sildenafil sale cheap cialis 40mg tadalafil india
no deposit bonus codes best online poker sites for real money buy tadalafil tablets
retin cream ca purchase avana online cheap brand avanafil 100mg
buy tadalafil 10mg online cheap voltaren 50mg tablet indocin 50mg sale
buy terbinafine 250mg generic order cefixime 200mg for sale buy amoxicillin sale
global poker online free slots casino games online casinos usa
chumba casino play online roulette for fun play casino games for cash
nifedipine online buy order adalat pills allegra brand
help with assignments australia purchase leflunomide pills oral sulfasalazine
order benicar pill purchase calan pill depakote brand
diamox pills order azathioprine 50mg pills azathioprine 25mg without prescription
order lanoxin 250 mg sale micardis usa buy molnunat online
order carvedilol 25mg pill cost coreg 25mg amitriptyline 10mg price
dapoxetine 60mg canada avana 200mg without prescription domperidone tablet
buy pamelor generic order paxil 10mg pills buy paroxetine 20mg pill
doxycycline 200mg us buy medrol online methylprednisolone 16mg for sale
purchase ropinirole online cheap labetalol medication trandate 100mg drug
nexium 20mg brand esomeprazole sale brand lasix 40mg
order generic minocin buy minocycline 50mg for sale buy terazosin 1mg online cheap
tadalafil 10mg generic levitra reviews top ed drugs
cost metformin 1000mg glycomet 500mg uk tamoxifen 10mg ca
modafinil 100mg uk buy modafinil pills promethazine online order
deltasone 5mg brand order amoxicillin 1000mg generic cost amoxil 250mg
order absorica without prescription acillin usa ampicillin 500mg canada
buy sildenafil for sale buy fildena 100mg for sale finasteride 1mg us
accutane 40mg ca zithromax 500mg tablet azithromycin online order
albuterol 4mg generic synthroid 150mcg cost augmentin 625mg without prescription
order prednisolone 40mg pill generic prednisolone 40mg buy furosemide generic diuretic
brand dutasteride order generic cephalexin 250mg buy xenical 120mg without prescription
omnicef over the counter lansoprazole 15mg brand brand pantoprazole
simvastatin 10mg for sale order promethazine 25mg for sale sildenafil 100mg pills for men
alfuzosin cheap purchase diltiazem for sale order diltiazem 180mg online
Завоеванные и унаследованные владения могут принадлежать или к одной стране и иметь один язык, или к
разным странам и иметь разные языки.
В первом случае удержать власть нетрудно, особенно, если новые подданные и раньше не знали свободы.
Дабы упрочить над ними власть нового государя достаточно искоренить род прежнего правителя, ибо
при общности обычаев и сохранении старых порядков ни
от чего другого не может произойти беспокойства.
Как пробудить в себе интерес к жизни
order generic sildenafil 50mg viagra 50mg price oral cialis
order coumadin 2mg pill order metoclopramide pill order generic allopurinol 100mg
order cetirizine sale zoloft 50mg generic buy sertraline without a prescription
purchase cenforce cenforce 50mg price buy glycomet pills for sale
lexapro 20mg over the counter lexapro order brand revia 50 mg
purchase femara without prescription sildenafil 100mg cost sildenafil mail order usa
tadalafil order cialis store medications for ed
cialis pills 10mg tadalafil on sale ed pills no prescription
buy stromectol for humans buy prednisone 40mg pill order isotretinoin 10mg pills
buy provigil 100mg online cheap buy deltasone generic deltasone 10mg uk
amoxicillin 1000mg oral cost zithromax 500mg how to get prednisolone without a prescription
buy accutane generic buy zithromax cheap azithromycin 500mg cost
albuterol canada amoxiclav order online levothyroxine tablet
order clomiphene 100mg clomid 50mg drug purchase hydroxychloroquine generic
buy doxycycline 200mg online cheap buy augmentin cheap order augmentin pill
order atenolol 50mg online cheap atenolol 100mg cheap buy femara paypal
buy synthroid 75mcg online generic serophene buy levitra 20mg without prescription
poip-nsk.ru
albendazole oral albendazole 400mg drug buy medroxyprogesterone 10mg sale
glucophage generic buy glycomet 1000mg generic order norvasc 5mg without prescription
biltricide 600mg generic hydrochlorothiazide 25mg usa purchase cyproheptadine online cheap
purchase lisinopril pill prilosec 20mg for sale buy metoprolol online cheap
lyrica 150mg oral buy loratadine generic generic priligy 30mg
order cozaar 25mg pills buy topiramate 100mg without prescription order topamax 200mg generic
buy imitrex for sale buy generic avodart over the counter dutasteride order online
plavix canada buy generic nizoral 200mg nizoral us
order flomax 0.2mg generic buy zofran sale aldactone canada
combivent 100mcg usa buy cheap zyvox order linezolid 600 mg online
progesterone 100mg cost order generic progesterone buy zyprexa generic
starlix 120 mg pill cheap nateglinide 120 mg buy candesartan 8mg pills
diflucan 100mg sale cipro pills buy ciprofloxacin paypal
buy generic flagyl over the counter buy septra paypal buy cheap generic keflex
clindamycin pills erythromycin pills sildenafil 50mg ca
buy careprost tablets generic careprost buy desyrel online
cheap trimox 500mg amoxicillin 250mg price buy generic clarithromycin 250mg
minocin 100mg drug order minocycline online cheap buy generic pioglitazone for sale
azithromycin pills order gabapentin 600mg sale gabapentin online
cheap tadalafil 20mg buy tadalafil 10mg for sale cheap cialis tablets
ivermectin 6 mg over the counter buy stromectol 3mg pills deltasone 10mg sale
vardenafil pills plaquenil over the counter plaquenil brand
order ramipril sale purchase altace buy arcoxia 120mg
vardenafil price cost zanaflex order plaquenil pills
benicar where to buy buy divalproex 250mg pills buy depakote online cheap
temovate buy online order buspar 5mg sale purchase amiodarone sale
Amazing issues here. I’m very glad to peer your article.
Thanks a lot and I’m having a look forward to touch you. my website : mp3 juice
Amazing issues here. I’m very glad to peer your article.
Thanks a lot and I’m having a look forward to touch you. my website : ytmp3
buy norvasc amlodipine price buy prilosec
priligy 90mg drug dapoxetine 90mg ca orlistat 60mg drug
order aristocort without prescription order claritin 10mg claritin price
ampicillin 500mg us buy ampicillin cheap flagyl brand
sumycin buy online tetracycline 500mg oral cost baclofen 10mg
erythromycin 250mg price buy generic nolvadex over the counter oral tamoxifen 20mg
buy reglan online cheap buy losartan 50mg pill order esomeprazole 20mg
purchase topamax generic purchase imitrex levaquin 500mg cheap
buy sildenafil online estradiol 2mg pill estradiol 2mg without prescription
retin where to buy buy tadalis pills for sale order avana for sale
order propecia 1mg online buy generic viagra 100mg order sildenafil 50mg pill
cheap cialis 10mg online cialis viagra 100mg for sale
tadalafil 20mg cost oral indocin 50mg order generic indomethacin
cialis 5mg without prescription buy fluconazole 200mg generic where to buy over the counter ed pills
buy terbinafine without a prescription lamisil online order cheap trimox
buy anastrozole medication buy clonidine 0.1mg without prescription buy catapres 0.1mg online
divalproex 250mg pills depakote 500mg pills imdur online order
cheapest ed pills online viagra 50mg over the counter brand name viagra
lansoprazole 15mg pill protonix medication protonix sale
pills for erection order tadalafil 20mg generic generic tadalafil 5mg
where to buy ed pills online order tadalafil 40mg generic cheap cialis online
purchase dapsone pill order perindopril sale perindopril brand
order fexofenadine 180mg online cheap allegra order buy glimepiride 4mg online cheap
buy terazosin 5mg pills order leflunomide generic order tadalafil
order etoricoxib 120mg sale order mesalamine without prescription azelastine nasal spray
buy cheap amiodarone dilantin uk order phenytoin 100mg pills
generic albenza 400 mg buy provera medication buy medroxyprogesterone 10mg online cheap
ditropan 2.5mg drug buy ditropan pills alendronate 35mg brand
buy biltricide generic oral hydrochlorothiazide 25 mg order periactin 4mg without prescription
purchase furadantin generic buy generic furadantin buy pamelor sale
generic luvox 100mg buy luvox 50mg buy cymbalta 40mg online
buy prograf 1mg generic tacrolimus 5mg pill requip 2mg drug
valsartan 160mg over the counter brand valsartan buy generic ipratropium 100 mcg
decadron 0,5 mg pill buy linezolid without a prescription order nateglinide
trileptal 300mg over the counter oral alfuzosin 10 mg purchase urso generic
buy bupropion online bupropion 150 mg usa strattera 25mg us
order captopril online cheap candesartan price oral carbamazepine 400mg
ciplox without prescription lincomycin 500 mg canada duricef without prescription
seroquel uk buy quetiapine tablets buy generic lexapro over the counter
where can i buy combivir buy cheap lamivudine accupril pills
bisoprolol 5mg sale buy ethambutol paypal buy oxytetracycline 250 mg pills
buy valaciclovir generic order floxin 200mg sale buy cheap generic ofloxacin