UNIT 4. CONDITIONAL STATEMENTS

Decision-Making Structure

• Is the process of making a decision about which part of the code should be executed or not based on some condition.

Decision-Making Structure (2)

• In C++ involves the usage of conditional statements to execute specific blocks of code primarily based on given situations and their results.

if structure

• The _ _ is one of the selection structures that will execute the statement or block of statements following it when the comparison expression evaluates to true

if STATEMENT (2)

• If the comparison expression evaluates to false, it will go out of the if structure without doing anything.

Syntax Statement (if STATEMENT)

if-else STATEMENT

• The if-else structure is a selection construct that will execute a statement or a block of statements when the condition evaluates to true or another series of instructions when the result of the comparison is false.

syntax statement (If-else STATEMENT)

If-else-if ladder STATEMENT

• helps the user decide from among multiple options. The C++ if statements are executed from the top down.

If-else-if ladder STATEMENT (2)

• As soon as one of the conditions controlling the if is true, the statement associated with that if is executed, and the rest of the C++ _ _ _ is bypassed. If none of the conditions is true, then the next statement will be executed.

syntax statement (If-else-if ladder STATEMENT)

nested if-else STATEMENT

• are those statements in which there is an if statement inside another if-else.

nested if-else STATEMENT (2)

• when we want to implement multilayer conditions (condition inside another condition, inside another condition, and so on). C++ allows any number of nesting levels.

switch STATEMENT

• is an alternative for the if else if ladder structure. It looks for a match among the cases and executes the statements inside the match. If no match is found, it will execute the default statements.