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❮ Cpp Switch Relational Operators Overloading ❯

C++ Decision Making

Decision-making structures require the programmer to specify one or more conditions to be evaluated or tested by the program, along with a statement or statements to be executed if the condition is true (required) and optionally, statements to be executed if the condition is false.

Below is the general form of a typical decision-making structure in most programming languages:

Decision Statements

The C++ programming language provides the following types of decision statements. Click on the links to see the details of each statement.

Statement Description
if statement An if statement consists of a boolean expression followed by one or more statements.
if...else statement An if statement can be followed by an optional else statement, which executes when the boolean expression is false.
nested if statements You can use one if or else if statement inside another if or else if statement.
switch statement A switch statement allows a variable to be tested for equality against a list of values.
nested switch statements You can use one switch statement inside another switch statement.

? : Operator

We have covered the conditional operator ? : in previous chapters, which can be used to replace if...else statements. Its general form is as follows:

Exp1 ? Exp2 : Exp3;

Where Exp1, Exp2, and Exp3 are expressions. Note the use and placement of the colon.

The value of a ? expression is determined by Exp1. If Exp1 is true, then Exp2 is evaluated and its value becomes the value of the entire ? expression. If Exp1 is false, then Exp3 is evaluated and its value becomes the value of the entire ? expression.

❮ Cpp Switch Relational Operators Overloading ❯