switch(variable){
	case 1:
		cout << "Case 1\n"
		break;
	case 2:
		cout << "Case 2\n";
	case 3:
		cout << "Case 3\n";
		break;
	default:
		cout << "Default\n"
}

Output für Variable = 1:

Case 1

Output für Variable = 2:

Case 2 Case 3

Output für Variable = 10:

Default