C++ ?: Conditional Operator

This page contains information about using C++ conditional operator. It is not intended to teach you how to write your code, only as a quick check reference sheet.

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• It is a ternary operator (takes 3 operands)
• Syntax: Expression1 ? Expression2 : Expression3;
• Execution: Expression1 is evaluated. If Expression1 is TRUE, then the resulting value is the value of Expression2, else the resulting value is the value of Expression3.



• Classic Example: Set a variable to the max of two variables
  - max = (a > b) ? a : b;     //can also be written as an IF statement



• Another classic example: y = (y >= 0) ? y : -y;    //(abs)