c switch default – Iampsp Blog

C++ Switch Statements

Use the switch statement to select one of many code blocks to be executed.

switch(expression) {
  case x:
    // code block
    break;
  case y:
    // code block
    break;
  default:
    // code block
}

This is how it works:

The switch expression is evaluated once

The value of the expression is compared with the values of each case

If there is a match, the associated block of code is executed

The break and default keywords are optional, and will be described later in this chapter

The example below uses the weekday number to calculate the weekday name: Continue reading

Switch Statement

Instead of writing many if..else statements, you can use the switch statement.

The switch statement selects one of many code blocks to be executed:

switch (expression) {
  case x:
    // code block
    break;
  case y:
    // code block
    break;
  default:
    // code block
}

This is how it works :

The switch expression is evaluated once
The value of the expression is compared with the values of each case
If there is a match, the associated block of code is executed
The break statement breaks out of the switch block and stops the execution
The default statement is optional, and specifies some code to run if there is no case match