用c++语言，编写一个计算长方体体积，圆柱体体积和圆锥体体积的程序，希望具体点，因为我是初学者，谢
#include using namespace std;// 定义数据精度,小于等于此值,即认为输入参数非法#define PRECISION 0.000001// 获取长方体体积// length: 长// width: 宽// height: 高double get_v(double length, double width, double height){// 判断输入参数是否合法// 如果不合法,打印错误信息并返回PRECISIONif (PRECISION >= length || PRECISION >= width || PRECISION >= height){cerr > length >> width >> height;// 调用计算长方体体积函数,获取体积并输出cout << "长方体(" << length << "," << width << "," << height << ")体积 = " << get_v(length, width, height) << endl;return 0;}
#include<iostream.h>
#define pi 3.14
class Shape
{
public:
double area()
{
return a;
}
double grith()
{
return g;
}
protected:
double a;
double g;
};
class Cricle:public Shape
{
public:
double area(double x=2)
{
a=pi*x*x;
return a;
}
double grith(double x=2)
{
g=2*pi*x;
return g;
}
show()
{
cout<<"Shape Opject:"<<endl;
cout<<"Cricle"<<endl;
cout<<"area:"<<area()<<endl;
cout<<"grith:"<<grith()<<endl;
}
protected:
double g;
double a;
};
class Triangle:public Shape
{
public:
double area(double x=1,double y=2,double z=3)
{
a=0.5*x*y;
return a;
}
double grith(double x=1,double y=2,double z=3)
{
g=x+y+z;
return g;
}
show()
{
cout<<"Shape Opject:"<<endl;
cout<<"Tritangle"<<endl;
cout<<"area:"<<area()<<endl;
cout<<"grith:"<<grith()<<endl;
}
protected:
double a;
double g;
};
class Rectangle:public Shape
{
public:
double area(double x=1,double y=2)
{
a=x*y;
return a;
}
double grith(double x=1,double y=2)
{
g=2*(x+y);
return g;
}
show()
{
cout<<"Shape Opject:"<<endl;
cout<<"Tritangle"<<endl;
cout<<"area:"<<area()<<endl;
cout<<"grith:"<<grith()<<endl;
}
protected:
double a;
double g;
};
void main()
{
Cricle A;
A.show();
Triangle B;
B.show();
Rectangle C;
C.show();
}
#include <iostream>
#include <string>
using namespace std;
#define PI 3.1415
class circle
{
public:
void information(double & a)
{
cout<<"请输入半径：";
cin>>a;
}
};
class sphere:public circle
{
public:
void first(double a)
{
double v1;
double s1;
s1=4*PI*a*a;
//第一二处错误
v1=(PI*a*a*a*4)/3 ;
cout<<"球的表面积为:"<<s1<<endl<<"球的体积为:"<<v1<<endl;
}
};
class cylinder:public circle
{
public:
void second(double a)
{
double s2;
double v2;
double h;
cout<<"请输入圆柱的高：";
cin>>h;
s2=2*2*PI*a*a+2*PI*a*h;
v2=2*PI*a*a*h;
cout<<"圆柱的表面积为:"<<s2<<endl<<"圆柱的体积为:"<<v2<<endl;
}
};
class cone:public circle
{
public:
void third(double a)
{
double s2;
double v2;
double l;
cout<<"请输入圆锥的高：";
cin>>l;
s2=2*PI*a*a+PI*a*l;
v2=2*PI*a*a*l/3;
cout<<"圆锥的表面积为:"<<s2<<endl<<"圆锥的体积为:"<<v2<<endl;
}
};
void main()
{
int chose;
double a;
double h;
double l;
cin>>chose;
circle bason;
bason.information(a);
cout<<"请选择："<<endl<<"求球请输入1"<<endl<<"求圆柱请输入2"<<endl<<"求圆锥请输入3"<<endl;
if(chose==1)
{
sphere bason;
//第三处错误
bason.first(a);
}
else if(chose==2)
{
cylinder bason;
bason.second(a);
}
else if(chose==3)
{
cone bason;
bason.third(a);
}
}
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