}
3、求出圆柱的体积:
#include"iostream.h"
classcircular
{
public:
circular(floatr)
{R=r;}
floatget_area()
{
area=3.141592657*R*R;
returnarea;
}
protected:
floatR;
private:
floatarea;
};
classcolumn:
publiccircular
{
public:
column(floatr,floath):
______________
{H=h;}
voidget_volume(______________)
{volume=c1.get_area()*H;}
~column()
{cout<<"圆柱的体积为:
"<protected:
floatH;
private:
floatvolume;
};
voidmain()
{
circularcir1(3);
columncolumn1(2,2);
column1.get_volume(______________);
}
4、把字符串a复制给字符串b
#include
usingnamespacestd;
_____________________
voidmain()
{
chara[]="Helloworld";
charb[N];
inti;
for(i=0;____________;i++)
b[i]=a[i];
______________________;
cout<<"a:
"<"<
cout<}
5、求最高分且指出学号
#include"iostream.h"
classstudent
{
public:
intscore;
_______________;
voidput_number();
private:
charm_