全国计算机等级考试教程二级c语言答案 daan

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1、《全国计算机等级考试二级教程——C语言程序设计》习题分析与解答（五）第十三章编译预处理和动态存储分配习题分析与解答 一、选择题 13.1【参考答案】A)13.2【参考答案】C) 13.3【参考答案】B) 13.4【参考答案】C) 13.5【参考答案】D) 13.6【参考答案】D)13.7【参考答案】D) 二、填空题 13.8【参考答案】ar=9ar=9ar=11 13.9【参考答案】［1］int*［2］s［3］*b 三、编程题 13.10【分析与解答】 (1)此命令行如下： #def

2、ineMYALPHA(a)(((a)>=′A′&&(a)<=′Z′)

3、

4、((a)>=′a′&&(a)<=′z′))(2)可用以下程序段来验证，此处s中存放了字符串，num中统计大、小写字母的个数： for(i=0;i

5、e,nomorethantwo.J,shieldedwire,sparewirebindingorder,reliablegrounding.7.7qualitystandard7.7.lcablesthroughthecableembeddedtubemakinguseofgalvanizedsteelpipe,tubeendswithoutburrs,smooth.7.7.2pipedoesnotallowbending,bendingthebendradiusshouldbe≥4timestimesth

6、eouterdiameterofthetubein.7.7.3ellipticityofabenttube,pipediameter≤60mm,not>8%,diameter>760mm,not>6%.7.7.4makingcablesburiedpipingapplicationrootproduction,growingwhereinterfaceisrequired,onlystraightpipe,onlythewireportconnections,weldedconnectionsarenotal

7、lowed.7.7.5servicesleeveshouldhaveagoodgrounding.7.7.6cabletraysinstallation,burrsanddirtandcorrosiontreatmentshouldbecarriedout,installthebridge...7.8.1.7pipingandpiping,equipmentandequipmentorpipingandotherequipmentshallhavesufficientexpansiongapinhotsitu

8、ations.7.8.1.8metaltemperatureoftheinsulatinglayer(hot)=shell-walltemperatureofenvironmenttemperature≤40°c.7.8.2paint7.8.2.lpaintofequipmentandpipelinesshouldhaveatleastaprimer(redpaint)andfinish.7.8.2.2paintappearancecoloruniform,withoutpaint,rust,flaking,

9、wrinkles,flowmarks,scum,paintparticlesandvisiblebrushmarks.7.8.2.3interlayershouldbetightandwithoutstratification.7.8.2.4pipelinesasphalt,fiberglassfabriccorrosion,externalappearanceshouldnevershowsurroundedbyglassfiberclothuniform,dense,paintedpitchinspect

10、ionshouldbenodelamination,cavitation,homogeneityofasphaltcoating,brushingeachlayerthicknessinaccordancewithdesignrequirements.Standard7.97.9structureplacementprocess.1fair-facedconcreteisaconcretesurfa