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- import java.util.Scanner;
- public class test {
- private static double PI = 3.14;
- /**
- * @param args
- */
- public static void main(String[] args) {
- // TODO Auto-generated method stub
- int yaricap;
- do{
- System.out.println("Lütfen yarı çapı giriniz veya çıkmak için -1 giriniz");
- Scanner ender = new Scanner(System.in);
- yaricap=ender.nextInt();
- if(yaricap!=-1)
- {
- System.out.println(dairealaniHesapla(yaricap));
- }
- }while(yaricap!=-1);
- }
- public static double dairealaniHesapla ( int yaricap )
- {
- return (yaricap*yaricap*PI);
- }
- }
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