import java.io.*;
public class Solution {
public static void main(String[] args) throws Exception {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
int n = Integer.parseInt(reader.readLine());
if(n == 0) {
System.out.println("zero");}
else if(n < 0) {
n++;
System.out.println(n);
}
else {
System.out.println(n * 2);
}
}
}
If the entered number is zero, display zero. WHY?
package com.codegym.task.task04.task0412;
/*
Positive and negative numbers
*/
import java.io.*;
public class Solution {
public static void main(String[] args) throws Exception {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
int n = Integer.parseInt(reader.readLine());
if(n == 0) {
System.out.println("zero");}
else if(n < 0) {
n++;
System.out.println(n);
}
else {
System.out.println(n * 2);
}
}
}