课堂练习讲解一（14章）ppt课件

课堂练习讲解一,14章,课堂练习：,编程包括三个重载的max()，分别实现求两个数、三个数和有10元素的数组中的最大值，并编写main()调用相应的函数，输出结果。,const int N=10; #include using namespace std; int max(int a,int b) return ab?a:b; int max(int a,int b,int c) return max(max(a,b),c); int max(int a,int n) int m=a0; for (int i=1;im) m=ai; return m; void main() int a,b,c; int dN=56,34,67,90,12,34,5,7,89,54; coutabc; cout“max(a,b)=“max(a,b)endl; cout“max(a,b,c)=“max(a,b,c)endl; cout“max(a,N)=“max(d,N)endl; ,2-33解：,#include using nemaspace std; struct timeData int year; int month; int date; Td; void main() coutTd.year; coutTd.month ; coutTd.date; cout“Date is: “Td.year“.” Td.month “.”Td.dateendl; ,#include using namespace std; class TimeDate public: void Setdate(int Y,int Mon,int D); void Showdate()cout“Date is:“year “.“month“.“dateendl; private: int year; int month; int date; ; void TimeDate:Setdate(int Y,int Mon,int D) year=Y; month=Mon; date=D; ,2-33改写为类,void main() int y,m,d; TimeDate myday; couty; coutm ; coutd; myclock.Showdate(); myday.Setdate(y,m,d); myday.Showdate(); ,1.改正下面程序中的错误: #include struct date int year; int month; int day; int main() cinyear,mouth,day;,改正: #include using namespace std; struct date int year; int month; int day; ; int main() date T; cinT.yearT.mouthT.day; return 0; ,2.改正下面程序中的错误,注意形参和实参的数据传递: #include using namespace std; class date public: setdate(int year=0;int month=0,int d=0;) cinyearmonth; d=day; private: int year; int month; int day; void main() cinyearmonthday; coutyearmonthday; ,改正: class date public: void setdate(int y=0,int m=0,int d=0) year=y;month=m;day=d; private: int year; int month; int day; ; void main() date T; T.setdate(2006,2,22); ,#include using namespace std; void main() /int p5;/auto型 int *p=new int5; /或 int *p;p=new int5; /int *p=new int1,2,3,4,5; /语法错 /p =1,2,3,4,5; for (int i=0;i=4;i+) pi=i*i; cout*(p+i)” ”; coutendl; delete p; ,3章3：创建有5个元素的int型动态数组p,对其赋值并输出,释放该数组.,#include void swap(int *x,int *y) int z; z=*x;*x=*y;*y=z; void main() int j=1,k=2; cout“j=“j“ k=“kendl; swap( ,3章4:指针调用实现两数交换,#include template void swap(T *x,T *y) T z; z=*x;*x=*y;*y=z; void main() int j=1,k=2; cout“j=“j“ k=“kendl; swap( ,3章4:利用模板进行指针和引用调用实现两数交换,(T &x,T &y),z=x; x=y; y=z;,(j, k);,(a, b);,3章5:求2、3、4个数最大值,#include using namespace std; int max(int a,int b) return ab?a:b; int max(int a,int b,int c) a=max(a,b); return ac?a:c; int max(int a,int b,int c,int d) a=max(a,b); a=max(a,c); return ad?a:d; void main() int a=3,b=4,c=35,d=1; cout“max(a,b) max= “max(a,b)endl; cout“max(a,b,c) max= “max(a,b,c)endl; cout“max(a,b,c,d) max=“max(a,b,c,d)endl; ,4章3. 根据下面UML图形写程序,#include class Tdate public: Tdate(int y,int m,int d) year=y;month=m;day=d; Tdate(Tdate ,void main() int a,b,c;inabc; Tdate A(a,b,c); Tdate B(A); A.print(); B.print(); B.SetDate(2010,3,7); B.print(); ,改正错误,#include class Tdate public: void Tdate(int y=0;int m=0;int d=0;) year=y;month=m;day=d; Tdate(Tdate ,void main() Tdate (x,y,z); Tdate:SetDate(x,y,z); Tdate A(2010,3,30); Tdate B; coutA.year“:“ A.month“:“A.day endl;