public class Lesson_2 {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		sayHello("Igor");
		iSum(2,30);
		iSquare(5);iSquare(3);
		System.out.println(oldEnough(20));
		System.out.println(min(2,3,4));
		System.out.println(min(4,2,3));
		System.out.println(min(3,4,2));
		System.out.println(isSpring(12));
		System.out.println(isSpring(-1));
		System.out.println(isSpring(0));
		System.out.println(isSpring(3));
		System.out.println(isSpring(2/5));
		

	}
	static void sayHello(String name){
		System.out.println("Hello "+name+"!");
		
	}
	static void iSum(double num1,double num2){
		double sum=num1+num2;
		System.out.println("num1+num2: "+sum);
	}
	static void iSquare(double number){
		number=number*number;
		System.out.println("Êâàäðàò ÷èñëà double: "+number);
	}
	static void iSquare(int number){
		number=number*number;
		System.out.println("Êâàäðàò ÷èñëà int: "+number);
	}
	static boolean oldEnough(int age){
		if (age >= 21) {
			return true;
		} 
			return false;
				
	}
	static int min(int a, int b, int c){
		int result=b;
		if (c<=b){
			if (a<=c){
				result=a;
				} else {
					result = c;}
			}
		else {
			if (b>a) {
				result=a;}
			}
		return (result);
		
	}
	static int isSpring(int month){
		int result=1;
		if (month<1 || month>12){
			
			result=-1;
		} else {
			if (month<3 || month>5){ result=0;}
		}
		return(result);
	}
}