package com.test;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
public class Test1 {
public static void main(String[] args){
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
System.out.println("請輸入圓半徑:");
try {
String str=br.readLine();
int i=Integer.parseInt(str);
System.out.println("圓的周長是:"+2*i*Math.PI);
System.out.println("圓的面積是:"+Math.PI*i*i);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
第二題:
package com.test;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
public class Test1 {
public static void main(String[] args){
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
System.out.println("請輸入第壹個整數:");
try {
String str=br.readLine();
int i=Integer.parseInt(str);
System.out.println("請輸入第二個整數:");
int j=Integer.parseInt(br.readLine());
if(i<j){
i=j;
}
System.out.println("較大的數是:"+i);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}