import java.io.*;

/* nas prvni vypocet soubor PrvniVypocet.java*/

// Standardni funkce: 
// mocnina, odmocnina, mensi ze dvou cisel, cela cast cisla, 
// absolutni hodnota, nahodne cislo - realne a cele, pi, oriznuti, …

public class PrvniVypocet {

    static int a = 2, b = 3, c = 4, d;
    static double p = 123.456, r = -67.89;
  
        public static void main(String[] arg){

              d = a - b;
              System.out.println("d =  " + d);
              
              System.out.print("druha mocnina " + a  + " = " + a * a);
              System.out.print(" a sedma mocnina " + a + " = " + Math.pow (a,7));
              System.out.println(" a jako cele cislo = " + (int) Math.pow (a,7));

              System.out.println("mensi ze dvou cisel " + a + " a " + b + " = " + Math.min (a,b) );
 
              System.out.println("odmocnina z " + c + " = " + Math.sqrt(c)); 

              System.out.print("cela cast " + p + " = " + Math.round(p));
              System.out.println("  a  -1.23 = " + Math.round(-1.23));

              System.out.println("abs.hodnota z " + r + " = " + Math.abs(r));

              System.out.println("nahodne cislo r = " + Math.random());
              int m = 10, n = 1;
              System.out.println("cele nahodne cislo c = " + (int) (Math.random()*m + n));

              System.out.println("pi = " + Math.PI);
              
              System.out.println("oriznute pi = " + (double)(int)(Math.PI *100)/100);

        }

}

/*
d =  -1
druha mocnina 2 = 4 a sedma mocnina 2 = 128.0 a jako cele cislo = 128
mensi ze dvou cisel 2 a 3 = 2
odmocnina z 4 = 2.0
cela cast 123.456 = 123  a  -1.23 = -1
abs.hodnota z -67.89 = 67.89
nahodne cislo r = 0.9411893539645569
cele nahodne cislo c = 6
pi = 3.141592653589793
oriznute pi = 3.14

*/