#include <stdio.h>
#include <stdlib.h>
class rectangle
{
private:
int length;
int width;
public:
rectangle(int x, int y)
{
length=x; width=y;
}
int area()
{
return(length*width);
}
void setlength (int a)
{
length=a;
}
void setwidth (int b)
{
width=b;
}
};
int main()
{
rectangle r4(20,30); // 產生物件
printf(" This is used to compute r4 area % d \n", r4.area());
// Reset length, width for r4
r4.setlength(200);
r4.setwidth(200);
printf(" This is used to recompute r4 area % d \n", r4.area());
system("pause");
return 0;
}
