What does || mean in c++

The || operator in C represents a logical OR operation, which is used to combine multiple Boolean expressions and return a Boolean value based on the true or false value of the input expression: if both expressions are true, return true . If both expressions are false, return false. If one expression is true and the other is false, true is returned.

The meaning of || in c

|| operator represents logical OR operation in c. It operates on two Boolean expressions and returns a Boolean value depending on the true or false value of the input expression.

Rules for logical OR operations:

• When both expressions are true, || returns true.
• When both expressions are false, || returns false.
• || returns true when one expression is true and the other expression is false.

Example:

<code class="cpp">bool isRainy = true;
bool isWindy = false;

if (isRainy || isWindy) {
  // 至少有一个条件为真
} else {
  // 两个条件都为假
}</code>

Note:

• || operator has a lower priority than && operator. The
• || operator is often used to combine multiple conditions to determine whether an expression is true. The
• || operator can also be used to create a Boolean expression in which any one condition is true.

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