实验三类的定义及使用.doc

实验内容：
(1) 定义一个类，要求：能完成计算矩形的面积和结果输出的操作；
实验源代码：
#include
using namespace std;
class Cylinder
{
private:
double x;
double y;
public:
double cylinderfun(double a,double b);
};

double Cylinder::cylinderfun(double a,double b)
{
double cylinder;
cylinder=a*b;
return cylinder;

}
int main()
{
double x,y;
double cylinder;
cout<<"请输入长和宽"<>x>>y;
Cylinder obj1;
cylinder=obj1.cylinderfun(x,y);
cout<<"Cylinder="<码：
#include
using namespace std;
class Point
{
private:
int a;
int b;
int c;
int d;
int e;
int n;
public:
void count(char g[100],int &a,int &b,int &c,int &d,int &e,int &n)
{
if(g[n]>='A'&&g[n]<='Z')
a++;
else if(g[n]>='a'&&g[n]<='z')
b++;
else if(g[n]==' ')
c++;
else if(g[n]>='0'&&g[n]<='9')
d++;
else e++;
n++;
}
};
int main()
{
char f[100];
int a,b,c,d,e,n,i;
a=b=c=d=e=n=i=0;

cout<<"请输入一串字符"<"<
using namespace std;
class juzheng
{
private:
int n,sum;
public:

int set(int n);

};
int juzheng::set(int n)
{ int a[100][100];
int z;
z=n*n;
cout<<"请输入"<>a[i][j];
cout<<"输出这个方阵"<
for(i=0;i
cin>>n;
juzheng a;
sum=a.set(n);
cout<<"该方阵的对角线的数据之和为"<
using namespace std;
class Point
{
private:
int y;
int m;
int d;
public:
int show(int y,int m,int d);

};

int Point::show(int y,int m,int d)
{ int c[13],x,o=0;
int a[13]={0,31,29,31,30,31,30,31,31,30,31,30,31};
int b[13]={0,31,28,31,30,31,30,31,31,30,31,30,31};
if(y%4==0){
c[13]=a[13];
for(x=0;x)
o=o+b[x];
o=o+d;}
return o;
}
int main()
{
int y,m,d,t;
cout<<"请输入年y,月m，天d请用空格隔开:"<>y>>m>>d;
Point obj1;
t=obj1.show(y,m,d);
cout<<"这是一年中的第"<进行加一天的操作；能对某日期进行减一天的操作。
实验源代码：
#include
using namespace std;
class riji
{
private:
int y;
int m;
int d;
public:
int set(int y,int m,int d);
int add(int y,int m,int d);
int jian(int y,int m,int d);
};
int riji::set(int y,int m,int d)
{cout<<m=m+1;
d=1;}
else
d=d+1;
}
else if(m==2)
{if(d==29){
m=m+1;
d=1;}
else
d=d+1;
}
else
{if(d==31){
y=y+1;
m=1;
d=1;}
else
d=d+1;
}
}
else
{
if(m==1||m3||m==5||m==7||m==8||m==10)
{if(d==31){
m=m+1;
d=1;}
else
d=d+1;
}
else if(m==4||m==6||m==9||m==11)
{if(d==30){
m=m+1;
d=1;}
else
d=d+1;
}
else if(m==2)
{if(d==28){
m=m+1;
d=1;}
else
d=d+1;
}
else
{if(d==31){
y=y+1;
m=1;
d=1;}
else
d=d+1;
}
}

cout<2||m==4||m==6||m==8||m==9||m==11)
{if(d==1){
m=m-1;
d=31;}
else
d=d-1;
}
else if(m==5||m==7||m==10||m==12)
{if(d==1){
m=m-1;
d=30;}
else
d=d-1;
}
else if(m==3)
{if(d==1){
m=m-1;
d=29;}
else
d=d-1;
}
else
{if(d==1){
y=y-1;
m=12;
d=31;}
}

}
else
{
if(m==2||m==4||m==6||m==8||m==9||m==11)
{if(d==1){
m=m-1;
d=31;}
else
d=d-1;
}
else if(m==5||m==7||m==10m==12)
{if(d==1){
m=m-1;
d=30;}
else
d=d-1;
}
else if(m==3)
{if(d==1){
m=m-1;
d=28;}
else
d=d-1;
}
else
{if(d==1){
y=y-1;
m=12;
d=31;}
}

}
cout<>y>>m>>d;
riji t;
t.set(y,m,d);
for(i=1;i<=3;i++){
cout<<"[1]进行加一天运算:"<>choice;
if(choice==0)
break;
switch(choice){
case 1:riji v;
v.add(y,m,d);break;
case 2:riji z;
z.jian(y,m,d);break;
}
}
system("PAUSE");
return 0;
}
实验结果：

11