What does && mean in c++

The && operator in C is a logical AND operator, which operates on two Boolean values ​​and returns true if and only if both input values ​​are true.

The && operator in C

The && in C is the logical AND operator. It operates on two Boolean values ​​and returns true if and only if both input values ​​are true.

Detailed description:

&AND& operator is a binary operator, that is, it requires two inputs. Both inputs must be Boolean (true or false).

The && operator has precedence 5, higher than the logical OR operator (||), but lower than the arithmetic operators (*, /, %, , -). The truth table for the

&& operator is as follows:

Input 1	Input 2	Output
true	true	true
true	false	false
false	true	false
false	false	false

Usage:

&AND& operator is usually used to combine multiple conditions, and check if they hold simultaneously. This is useful in conditional statements (such as if statements) or logical expressions. For example:

if (x > 0 && y < 10) {
  // 执行代码块
}

In the above example, the code block will only execute when x is greater than 0 and y is less than 10. If either condition is false, the code block will not execute. Comparison of

with the || operator: The

&& operator is similar to the || (logical OR) operator, but opposite. The &AND& operator returns true only if both inputs are true, while the || operator returns true if at least one input is true.

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