package com.company;
public class demo03 {
public static void mainn(String[] args){
int days =46;
int week =46/7;
int leftday =46/7;
System.out.println("46天等于"+ week +"周" +"剩余" + leftday);
double PAI =3.14 ;
float r =1.5f ;
double area = PAI * r *r;
System.out.println("半径为" + r +"圆的面积为:" + area);
}
}
