University of Central Florida (UCF) EGN3211 Engineering Analysis and Computation Final Practice Exam

Logical operators in the C language, specifically the logical AND (`&&`) and logical OR (`||`), indeed utilize short circuit evaluation. This means that the evaluation of the expression will stop as soon as the result can be determined, without evaluating all operands.

For the logical AND operator, if the first operand is false, the overall expression cannot be true regardless of the value of the second operand. Hence, the second operand is not evaluated. Conversely, for the logical OR operator, if the first operand is true, the overall expression is true, and there is no need to evaluate the second operand.

This behavior is efficient because it can prevent unnecessary calculations and can also avoid side effects that might occur if the second operand is a function call or an expression that modifies state. Short circuit evaluation is a fundamental feature that optimizes performance and ensures conditional checks are performed judiciously in code.

The other options do not accurately represent this aspect of logical operators in C. The concept of short circuit evaluation is highly relevant to logical operations, and thus affirming that logical operators do use this evaluation method is correct.