#include <stdio.h>
#include <stdlib.h>
struct rectangle
{
private:
int length;
int width;
public:
int area(int x ,int y)
{
length=x;
width=y;
return (length*width);
}
int abc(int x ,int y)
{
length=x;
width=y;
return (2*(length+width));
}
};
int main()
{
rectangle r1;
printf("計算面積=%d\n", r1.area(10,20));
printf("計算面積=%d\n", r1.area(20,20));
printf("計算面積=%d\n", r1.area(30,20));
printf("計算周長=%d\n", r1.abc(30,20));
printf("計算周長=%d\n", r1.abc(30,20));
printf("計算周長=%d\n", r1.abc(30,20));
system("pause");
return 0;
}