IncrementAndDecrementOperators- loops1

package lessons;

public class IncrementAndDecremementOp
{

	public static void main(String[] args)
	{
		//just add a value to a current value
		//a 'Postfix' operator because it comes after the variable
		//prefix & postfix op example:

		int num  = 4;


		//increment
		System.out.println("num is "+num);

		num ++;
		//means +1 to current value of num, now it is s5

		System.out.println(" num is now"+num);//num is 5

		//decrement
		num --;
		// means -1 to current value of num, now it is 4

		//a 'Postfix' operator because it comes after the variable
				//prefix & postfix op example:
		//postfix
		System.out.println("println first"+num++);// 5
		System.out.println("after println:"+num);//4
		//adds after it is printed not before

		//prefix
		System.out.println("println first "+ ++num);//5
		System.out.println(num);//5
		//adds one before printing



		int x = 5;
		int y = ++x+x--;
		// adds 1 to 5, so ++x = 6, now +x and x is 6 so it is 12, ?????
		System.out.println(y);
	}

}