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原创 阿里云Centos7.9安装linux.x64_11gR2笔记
2.安装过程中出现:The file "/u01/app/oracle/oradata/Seed_Database.dfb" containing the datafiles information is not found. Please specify a valid file.按一下操作即可:# 找到文件,把文件复制到ls /data/u01/app/oracle/oradata/orcl/下。1.全网很多安装都会出现一些问题,找了好久,找到“令狐大哥”的帖子安装成功。
2023-06-20 23:16:17 164
定义三个CShape的派生类CSquare(正方形)
#include<iostream>
using namespace std;
class CShape{
public:float Area;
float Perimeter;
CShape()
{ Area=0;Perimeter=0;
}
virtual void GetArea(){}
virtual void GetPerimeter(){}
};
class CRectangle:public CShape{
private: int l;int h;
public:
CRectangle(int h,int l ):CShape()
{this->h=h;this->l=l;
}
void GetArea()
{Area=l*h;cout<<"矩形的面积="<<Area<<endl;}
void GetPerimeter()
{Perimeter=(l+h)*2;cout<<"矩形的周长="<<Perimeter<<endl;
}
};
class CCirle:public CShape{
private:float r;
public:CCirle(float r):CShape()
{this->r=r;
}
void GetArea()
{
Area=3.14159*r*r;
cout<<"圆的面积="<<Area<<endl;
}
void GetPerimeter()
{
Perimeter=r*3.14159*2;
cout<<"圆的周长="<<Perimeter<<endl;
}
};
class CSquare:public CShape{
private:
int a;
public:
CSquare(int a):CShape()
{
this->a=a;
}
void GetArea()
{
Area=a*a;
cout<<"正方形面积="<<Area<<endl;
}
void GetPerimeter()
{
Perimeter=4*a;
}
};
class CTrapeziod:public CShape{
private:
int lu;
int ld;
int h;
public:
CTrapeziod(int lu,int ld,int h):CShape()
{
this->lu=lu;
this->ld=ld;
this->h=h;
}
void GetArea()
{
Area=(lu+ld)*h/2;
cout<<"梯形面积="<<Area<<endl;
}
};
class CTrangle:public CShape{
private:
int d;
int h;
public:
CTrangle(int d,int h):CShape()
{
this->d=d;
this->h=h;
}
void GetArea()
{
Area=d*h/2;
cout<<"三角形的面积="<<Area<<endl;
}
};
void main()
{
CShape *p[5];
CRectangle CR(5,10);
CCirle CC(3);
CSquare CS(4);
CTrapeziod CT1(2,5,4);
CTrangle CT2(6,2);
p[0]=&CR;
p[0]->GetArea();
p[1]=&CC;
p[1]->GetArea();
p[2]=&CS;
p[2]->GetArea();
p[3]=&CT1;
p[3]->GetArea();
p[4]=&CT2;
p[4]->GetArea();
int i,
double SumArea=0.f;
for(i=0;i<5;i++)
{
SumArea=p[i]->Area+SumArea;
}
cout<<"面积总和="<<SumArea<<endl;
}
2008-11-05
HTTPClient提交失败,fiddler提交成功是什么原因?
2020-05-03
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