C++Primer Plus第六章编程练习.doc

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1、第六章编程练习1、#include #include int main() using namespace std; char ch; cin.get(ch); while(ch!=) if(isdigit(ch) cin.get(ch); else if(islower(ch) ch=toupper(ch); else ch=tolower(ch); coutch; cin.get(ch); system(pause); return 0; 2、#include int main() using namespace std; double sum=0; double average=0; d

2、ouble num10; int i=0,total=0; double tmp; while(cintmp&i10) numi=tmp; sum+=numi; +i; if(i!=0) average=sum/i; for(int j=0;javerage) +total; cout这些数字的平均值为averageendl; cout并且共有total个数字大于平均值。n; system(pause); return 0; 3、#include int main() using namespace std; coutPlease enter one of the following choi

3、ces:n c)carnivore p)pianistn t)tree g)gamenfn; coutch; while(ch!=c&ch!=p&ch!=t&ch!=g) coutch; switch(ch) case c: coutA maple is a tree.n; break; case p: coutA maple is a pianist.n; break; case t: coutA maple is a tree.n; break; case g: coutA maple is a game.n; system(pause); return 0; 4、#include con

4、st int strsize=20;struct bop char fullnamestrsize; char titlestrsize; char bopnamestrsize; int preference;int main() std:coutBenevolent Order of Programmers Reportn a. display by name b. display by titlen c. display by bopname d. diplay by preferencen q. quit; char ch; bop member5=Wimp Macho,English

5、 Teacher,DEMON,0, Raki Rhodes,Junior Programmer,BOOM,1, Celia Laiter,Super Star,MIPS,2, Hoppy Hipman,Analyst Trainee,WATEE,1, Pat Hand,Police,LOOPY,2; std:coutch&ch!=q) switch(ch) case a: for(int i=0;i5;i+) std:coutmemberi.fullnamestd:endl; break; case b: for(int i=0;i5;i+) std:coutmemberi.titlestd:

6、endl; break; case c: for(int i=0;i5;i+) std:coutmemberi.bopnamestd:endl; break; case d: for(int i=0;i5;i+) if(memberi.preference=0) std:coutmemberi.fullnamestd:endl; else if(memberi.preference=1) std:coutmemberi.titlestd:endl; else if(memberi.preference=2) std:coutmemberi.bopnamestd:endl; std:coutNe

7、xt choice: ; std:coutBye!n; system(pause); return 0;5、#include int main() using namespace std; double income,revenue; coutincome&income=0) if(income5000&income15000&income=35000) revenue=0.1*(15000-5000)+0.15*(income-15000); else revenue=0.1*(15000-5000)+0.15*(35000-15000)+0.2*(income-35000); cout你的

8、所得税为revenueendl; cout请输入你的收入：; system(pause); return 0;6、#include #include struct patron std:string name; double money;int main() using namespace std; int num,tmp=0; coutnum; cin.get(); patron *ps=new patronnum; for(int i=0;inum;+i) cout请输入第i+1位捐款人的名字：; getline(cin,psi.name); cout请输入第i+1psi.money; c

9、in.get(); coutGrand Patrons:n; for(int i=0;i10000) coutpsi.nameendl; +tmp; if(tmp=0) coutnonen; coutPatrons:n; for(int i=0;inum;+i) if(psi.money=10000) coutpsi.nameendl; +tmp; if(tmp=0) coutnonen; delete ps; system(pause); return 0; 7、#include #include int main() using namespace std; int vowel,conso

10、nant,other; vowel=consonant=other=0; char word15; coutword) if(isalpha(word0) if(word0=q&strlen(word)=1) break; else if(word0=a|word0=i| word0=u|word0=e|word0=o) +vowel; else +consonant; else +other; coutvowel words beginning with vowelsn; coutconsonant words beginning with consonantsn; coutother ot

11、hersn; system(pause); return 0; 8、#include #include #include int main() using namespace std; char ch; int sum=0; ifstream inFile; inFile.open(abc.txt); if(!inFile.is_open() coutCould not open the file n; coutch; while(inFile.good() +sum; inFilech; if(inFile.eof() coutEnd of file reached.n; else if(i

12、nFile.fail() coutInput terminated by data mismatch.n; else coutInput terminated for unkonwn reason.n; cout总共有sum个字符在这个文件中。endl; system(pause); return 0; 9、#include #include #include struct member char name20; double donation;int main() using namespace std; int num; int count1=0; int count2=0; ifstre

13、am fin; char file20; coutEnter name of data file: ; cin.getline(file,20); fin.open(file); if(!fin.is_open() coutCould not open the file-fileendl; coutnum; fin.get(); member *pd=new membernum; for(int i=0;ipdi.donation; fin.get(); coutGrand Patrons:n; for(int i=0;i=10000) coutpdi.name pdi.donationendl; count1+; if(count1=0) coutnonen; coutPatrons:n; for(int i=0;inum;i+) if(pdi.donation10000) coutpdi.name pdi.donationendl; count2+; if(count2=0) coutnonen; delete pd; system(pause); return 0;