How to execute conditional expression in c++

Conditional expressions are executed in the form of the ternary operator and are used to select between two expressions based on the condition value. The syntax is: condition ? expr1 : expr2. Calculate the condition value and return the value of expr1 if true, or the value of expr2 if false.

C Conditional expression execution method

Conditional expression, also called ternary operator, is C A syntax construct used to select two different expressions based on a conditional value. Its general syntax format is:

<code class="cpp">condition ? expr1 : expr2;</code>

where:

• condition is a Boolean expression used to determine whether the condition is true.
• expr1 is the expression to be executed when condition is true.
• expr2 is the expression to be executed when condition is false.

Execution process:

1. Calculate conditional expression : Calculate conditional expression condition value. If condition is true, continue to step 2; otherwise, continue to step 3.
2. Execute true expression: If condition is true, evaluate the true expression expr1 and return that value.
3. Execute false expression: If condition is false, evaluate the false expression expr2 and return that value.

Example:

<code class="cpp">int a = 5;
int b = 10;
int result = a > b ? a : b;</code>

In this example, the conditional expression a > b evaluates to true, so result will be assigned the value of a, which is 5.

Note:

• The expression in the conditional expression must be a valid C expression.
• The two expressions expr1 and expr2 must have the same type.
• Conditional expressions can be nested, allowing the creation of complex branch conditions.

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