C++Primer Plus(第6版)中文版编程练习答案--第六章.pdf

1 注释 这些程序是唐刀在学习的时候编写的 其中可能存在错误和不足 大家注释 这些程序是唐刀在学习的时候编写的 其中可能存在错误和不足 大家 做个参考就好 做个参考就好 1 include include int main using namespace std cout 请输入字符 符号结束 endl char ch while cin get ch else 如果 ch 是小写字母 cout char toupper ch 转换为大写字母然后输出 else if isdigit ch 非数字非字母则原样输出 cout ch else continue return 0 2 include using namespace std int main double arr 10 0 0 0 0 0 0 0 0 0 0 cout 输入 10 个值 当输入为非数字时结束 endl int count 0 2 while count arr count count double sum 0 double aver 0 for int i 0 i count i sum arr i aver sum count int n 0 for int j 0 javer n cout 输入 count 个数据 数据的平均值为 aver 共有 n 个数据大于平均值 endl getchar getchar getchar return 0 3 include using namespace std int main cout Please enter one of following choices endl cout c carnivore endl cout p pianist endl cout t tree endl cout g game temp while temp c 3 switch temp case c cout A maple is a carnivore endl break case p cout A maple is a pianist endl break case t cout A maple is a tree endl break case g cout A maple is a game endl break return 0 4 include using namespace std struct bop char fullname 20 char title 20 char bopname 20 int preference int main bop member 5 Wimp Macho leader wm 1 Raki Rhodes member1 rr 2 Celia Laiter member2 cl 3 Hoppy Hipman member3 hh 4 Pad Hand member4 ph 5 cout benevolent order of programmers report endl cout a display by name endl cout b display by title endl cout c display by bopname endl cout d display by preference endl cout q quit tempi 5 i cout member i fullname endl break case b for int i 0 i 5 i cout member i title endl break case c for int i 0 i 5 i cout member i bopname endl break case d for int i 0 i 5 i cout member i preference endl break default break cout Bye endl return 0 5 include using namespace std int main int money 存储用户输入 double tax 存储需要缴纳的税金 int temp 根据用户输入得出的用户需要缴税的等级 while cin money else if money 5001 temp 1 else if money 15001 temp 2 else temp 3 switch temp 根据上面规定的等级 计算税金 case 0 tax 0 break case 1 tax money 5000 0 1 break case 2 tax money 15000 0 15 10000 0 1 break case 3 tax money 35000 0 2 20000 0 15 10000 0 1 break cout You should pay tax tvarps endl getchar 程序运行时方便阅读 getchar getchar return 0 6 include include include using namespace std struct donation 结构体 存储捐款者信息 string name double money int main int n of donation 0 6 cout 请输入捐款者数目 n of donation donation list new donation n of donation 创建动态分配的结构数组 for int i 0 i n of donation i 输入捐款者的信息 cout 输入第 i 1 位捐款者的信息 endl cout 名字 cin sync getline cin list i name cout list i money int temp 0 记录有没有人的捐款大于一万元 cout 重要捐款人 endl for int i 0 i10000 cout list i name list i money endl temp if temp 0 cout 此项目没有人 endl temp 0 cout 捐款人 endl for int i 0 i n of donation i if list i money 10000 cout list i name list i money endl temp if temp 0 cout 此项目没有人 endl delete list 释放内存 getchar 程序运行时方便阅读 getchar return 0 7 7 include include include include using namespace std int main int yuanyin 0 int fuyin 0 int qita 0 string word char temp cout Enter words q to quit word while word q switch temp 计算 case a yuanyin break case e yuanyin break case i yuanyin break case o yuanyin break case u yuanyin break default fuyin else 其他 qita cin word cout yuanyin words beginning with vowels endl 输出 cout fuyin words beginning with consonants endl cout qita others endl getchar 程序运行时方便阅读 getchar 8 return 0 8 include include include include using namespace std int main char filename 20 ifstream inFile cout Enter name of file endl cin getline filename 20 inFile open filename if inFile is open cout could not open the file n cout value while inFile good count inFile value if inFile eof cout End of file reached n else if inFile fail cout Input terminated by data mismatch n else cout Input terminated for unknown reason n if count 0 cout None of letter else cout Number of letters count endl inFile close 9 getchar 程序运行时方便阅读 getchar return 0 9 include include include include const int MAX 60 struct Patrons std string name double money int main using namespace std int n int sign 0 看看是否须要输出 none char filename MAX ifstream inFile cout 请输入文件名 cin getline filename MAX inFile open filename if inFile is open cout 无法打开文件 filename endl cout Program terminating n 开始从文件读入 Patrons n Patrons new Patrons n for int i 0 i n Patrons i money inFile close 关闭文件 10 cout endl endl Grand Patrons endl endl for i 0 i10000 cout n Patrons i n