Branches

Intro

Branches in a computer program help to build a logic process.

So we can do something like "If this case is true, than execute this piece of code".

if

bool condition = true;
if (condition == true) {
    // some code
}

Please notice that a compare operator ( == ) , as used in line 2, always returns a boolean value. The if satement always requires an expression, that returns a boolean in the end:

bool condition = true;
if (condition) {
    // some code
}

int[] numbers = { 3, 4, 5 };
if (3 > 4 || numbers.Count() == 3) {
    // some code
}

static bool IsOnline() {
    // some code
    return true;
}
if (IsOnline()) { 
    // some code
}

Visualization in a flow chart diagramm:

if else

Example:

bool isCooked = true;
if (isCooked == true) {
    Console.WriteLine("Meal is cooked");
} else {
    Console.WriteLine("Meal is not cooked");
}

Line 3 or Line 5 is executed

switch

Switch Statement

Visualization in a flow chart diagramm:

Example:

int number = 12;
switch (number) {                
    case 1:
        Console.WriteLine("number is 1");
        break;
    case 2:
    case 3:
    case 4:
    case 5:
        Console.WriteLine("number is between 2 and 5");
        break;
    default:
        Console.WriteLine("undefined");
        break;
}

Shortcuts

Description	Keybinding (english layout!)
Autocomplete If Case	if, Tab, Tab