for (int i=0; i<=3; i++)
System.out.println(i);
pisze się:
System.out.println(0);
System.out.println(1);
System.out.println(2);
System.out.println(3);
for (int i=0; i<=3; i++)
System.out.println(i);
System.out.println(0);
System.out.println(1);
System.out.println(2);
System.out.println(3);