Basic flow statements

What are basic flow statements? These are several statements which help you to structure the program code in a way that allows you to do different action(s) based on the data stored in particular variables. We will learn how to execute just part of the code if a certain condition is met (the condition could be a pretty complex Boolean expression). Then, we will find a way to execute different actions several times in a loop. The next thing will be to learn how to repeat things until a condition is met and to stop executing statements once the condition is not satisfied. Using flow-control statements, we can construct pretty complex code chunks, similar to what we can express with regular text writing. To develop a program, we should first create an algorithm (a sequence of steps) which leads to the desired result, taking into account all external and internal conditions. Based on this sequence, we can then develop a program, using all flow operators. But let's get familiar with some forms of them.