C++ - Switch

Overview

Estimated time: 20–30 minutes

Branch on integral or enum values using switch/case/default. Learn when fallthrough occurs and how to avoid it.

Learning Objectives

• Write switch statements with case and default labels.
• Prevent unintended fallthrough with break.

Prerequisites

• C++ - If / Else

Example

int day=2;
switch(day){
  case 1: /*...*/ break;
  case 2: /*...*/ break;
  default: /*...*/ break;
}

Common Pitfalls

• Forgetting break causes fallthrough.