这次的 C++ 作业好不容易整完了,发出来方便一下大家,欢迎参考借鉴~
顺便给我的小博客打个广告…
#include
#include
#include
using namespace std;
int main(){
int *a=new int[20];
int num,negative=0,positive=0;
cin>>num;
if(num<1||num>20){
cout<<"number error.\n";
delete a;
return 0;
}
for(int i=0;i>a[i];
if(a[i]>0)positive++;
if(a[i]<0)negative++;
}
cout<<"There are "<
#include
#include
#include
using namespace std;
const float pi=3.14159;
int main(){
float r,s,c;
cin>>r;
s=pi*r*r;
c=2*pi*r;
cout<<"s="<
#include
#include
#include
using namespace std;
class Book{
public:
Book(string name,float p,int n);
void display(){
cout<
#include
#include
#include
using namespace std;
class Stu{
public:
Stu(string name,int score);
friend void print();
string name;
int score;
};
class Tea{
public:
Tea(string name,string pro);
friend void print();
string name;
string pro;
};
Stu::Stu(string na,int sc){
name=na;
score=sc;
}
Tea::Tea(string na,string pr){
name=na;
pro=pr;
}
void print(Stu S,Tea T){
cout<<"student's name:"<>stuname;
cout<<"请输入教师姓名:"<>teaname;
cout<<"请输入教师职称:"<>teapro;
Stu student(stuname,88);
Tea teacher(teaname,teapro);
print(student,teacher);
return 0;
}
#include
#include
#include
using namespace std;
class Cube{
public:
Cube(int L=3,int W=2,int H=1);
int L,W,H;
int Compute(){
return L*W*H;
}
};
Cube::Cube(int l,int w,int h){
L=l,W=w,H=h;
}
int main(){
int l,w,h;
cout<<"输入立方体的长宽高:"<>l>>w>>h;
Cube A(l,w,h);
Cube B;
cout<
#include
#include
#include
using namespace std;
class Car{
private:
string brand;
string type;
int year;
double price;
public:
Car(void){
brand="undefinition";
type="undefinition";
year=2000;
price=0;
}
Car(string brand,string type,int year,double price);
string GetBrand(){
return brand;
}
string GetType(){
return type;
}
int GetYear(){
return year;
}
double GetPrice(){
return price;
}
};
Car::Car(string b,string t,int y,double p){
brand=b;
type=t;
year=y;
price=p;
}
int main(){
Car car1("FIAT","Palio",2007,6.5);
cout<
#include
#include
#include
using namespace std;
class Student{
private:
int age;
string name;
public:
Student(int a, string m){
age=a,name=m;
}
Student(){
age=0,name="unnamed";
}
void SetMember(int a, string m){
age=a,name=m;
}
int Getage(){
return age;
}
string Getname(){
return name;
}
};
int main(){
Student stu[3]={Student(13,"wang")} ; /*第一个元素用带参构造函数初始化;第二、三个元素由无参构造函数初始化,默认年龄为 0 ,姓名为 "unnamed"*/
stu[2].SetMember(12,"zhang"); /*修改第三个元素的数据成员值*/
cout<