Additional Control Structures

1. Additional Control Structures Robert reaves

2. Switch Statement • Switch(IntegralOrEnumExpression) { • switchLabel…Statement • . • . • } • IntegralOrEnumExpressionis of type char, short, int, long, bool, or enum.

3. Switch Statement • A selection control structure that allows us to list any number of branches. • Similar to the nested if statement. • Switch expression – an expression whose value is matched with a label attached to a branch. • switch(letter) { // letter is the switch expression. • case ‘X’: • statement1; • break • case ‘L’: • statement2; • break;

4. Do-While Statement • do { • statement • } while( expression );

5. Do-while Statement • Is a loop control structure in which the loop condition is tested at the end (bottom) of the loop. • Guarantees the loop body to be executed at least once.

6. For Statement • For (InitStatement Expression1; Expression2) • Statement

7. For Statement • Designed to simplify the writing of count-controlled loops. • Ex: • for(int x = 0; x < n; x++) { • cout << x << endl; • } • Merely a compact notation for a While loop. Complete essentially translates them the same.

8. Break Statement • Break statement causes an immediate exit from the innermost Switch, While, do-while, or for statement in which it appears. • Use break sparingly; overuse can lead to confusing code.

9. Continue Statement • Continue statement terminates the current loop iteration, but not the entire loop. • Valid only within loops.