Welcome to Computer Programming

For Loop Examples

• Basic loop i going up by one from 0-9

  for (int i=0; i<10; i++)
  

• i going up by one from a to b

  for (int i=a; i<=b; i++)
  

• i going up by 5 from 5-50 (so i would have the values 5,10,15,...45,50)

  for (int i=5; i<=50; i=i+5)
  

• i going down by one from 5 to 1

  for (int i=5; i>0; i--)
  

While Loop Examples

• To keep repeating until the user enters -1

  System.out.println("Give me a number (type -1 to stop)?");
  int num=scan.nextInt();
  while (num!=-1)
  {
  	//do something with num
  	System.out.println("Give me another number (type -1 to stop)?");
  	num=scan.nextInt(); //note I dont say int, because I already declared it as int
  }