Question

C++编程题（急急急！！！）

·定义一个图形类Cshape，其中有保护类型的数据成员：高度和宽度，一个有参的构造函数。
·由Cshape类派生出两个类：矩形类CRectangle和等腰三角形类CTriangle。
·在每个派生类中都包含一个函数Area（），分别用来计算矩形和等腰三角形的面积。

以上是题目

Answer 1

自己写的，试过可行，满足你的题目要求，请采纳！谢谢

#include <cstdlib>
#include <iostream>
#include <string>
using namespace std;

class Cshape
{
public:
Cshape(float a,float b)
{
high=a;
width=b;
}
~Cshape(){}
protected:
float high;float width;
};
class CRectangle:public Cshape
{
public:
CRectangle(float h,float w):Cshape(h,w)
{
gaodu = h;
kuandu = w;
cout<<"矩形信息存入并显示！"<<endl;
}
void display()
{
cout<<"长方形的长为："<<gaodu<<endl;
cout<<"长方形的宽为："<<kuandu<<endl;
}
void Area()
{
float sum=0;
sum=gaodu*kuandu;
cout<<"长方形的面积为："<<sum<<endl;
}
~CRectangle()
{}
private:
float gaodu,kuandu;
};
class CTriangle:public Cshape
{
public:
CTriangle(float h,float w):Cshape(h,w)
{
gaodu = h;
kuandu = w;
cout<<"等腰三角形存入并显示："<<endl;
}
void display()
{
cout<<"等腰三角形的高为："<<gaodu<<endl;
cout<<"等腰三角形的宽为："<<kuandu<<endl;
}
void Area()
{
float sum=0;
sum=(gaodu*kuandu)/2;
cout<<"等腰三角形的面积为："<<sum<<endl;
}
~CTriangle()
{}
private:
float gaodu,kuandu;
};

int main(int argc, char *argv[])
{
CTriangle test1(100,100);
test1.Area();
CRectangle test2(100,100);
test2.Area();
system("pause");
return 0;
}

Answer 2

我只写了转换为二进制的，十进制比较简单
#include<stdio.h>
#include<stdlib.h>
int
getB(int
n)
{
if(n==1||n==0)
{
printf("%d",n);
return
0;
}
else
{
getB(n/2);
printf("%d",n%2);
n/=2;
}
}
int
main(void)
{
int
a;
while(1)
{
printf("请输入数字：\n");
scanf("%d",&a);
getB(a);
printf("\n");
}
return
0;
}

Answer 3

class CShape
{
float area;
public:
float Area() = 0;
};
class CTiangle : public CShape
{
float a,b c;
public:
float Area();
};

float CTrigangle::Area()
{
area = a*b*sin(c/2);
return area;
}
class CRectangle : public CShape
{
float a,b;
public:
float Area();
};

float CRectangle::Area()
{
area = a*b；
return area;
}

Answer 4

#include<iostream>
using namespace std;
class graph
{
protected:
float high,wide;
public:
graph();
graph(float h,float w)
{
high=h;wide=w;cout<<"高为："<<h<<"\t宽为："<<w<<endl;} };

class retangle:public graph
{
public:
retangle(float h,float w):graph(h,w){}
void area()
{ cout<<"矩形的面积是:"<<high*wide<<endl;}
};

class triangle:public graph
{
public:
triangle(float h,float w):graph(h,w){}
void area()
{ cout<<"等腰三角形的面积是:"<<high*wide/2<<endl;}
};

void main()
{ retangle g(2,3);
g.area();
triangle h(2,3);
h.area();
}