What is the output of this program?

class mainclass
 {
  

What is the output of this program?

class mainclass
 {
         public static void main(String args[])
          {
             char a = 'A';
             a++;
 	    System.out.print((int)a);
         }
      }

2) What will the output of the following program?

public class Test{
       public static void main(String args[])
  {
        float f = (1 / 4) * 10;
             int i = Math.round(f);
             System.out.println(i);
       }
 }

3) What is the output of this program?
class asciicodes
{
public static void main(String args[])
{
char var1 = 'A';
char var2 = 'a';
System.out.println((int)var1 + " " + (int)var2);
}
}

4) What will be the output?

public class Test
  {
       public static void main(String args[])
 {
      int a = 42;
       double b = 42.25;
      System.out.print((a%10)+" "+(b%10));
       }
 }

5) What is the output of this program?

class variable_scope
      {
         public static void main(String args[])
          {
             int x;
             x = 5;
             {
 	        int y = 6;
 	        System.out.print(x + " " + y);
             }
             System.out.println(x + " " + y);
         }
      }