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Logical operators are used to determine the logic between variables or values: Operator. Name. Description. Example. Try it. &&. Logical and. Returns true if both statements are true.
For the built-in logical NOT operator, the result is true if the operand is false. Otherwise, the result is false . For the built-in logical AND operator, the result is true if both operands are true .
C++ has 3 logical operators: Logical NOT. You have already run across the logical NOT unary operator in lesson 4.9 -- Boolean values. We can summarize the effects of logical NOT like so: If logical NOT’s operand evaluates to true, logical NOT evaluates to false. If logical NOT’s operand evaluates to false, logical NOT evaluates to true.
The logical operators && and || are used when evaluating two expressions to obtain a single relational result. The operator && corresponds to the Boolean logical operation AND, which yields true if both its operands are true , and false otherwise.
In C++, relational and logical operators compare two or more operands and return either true or false values. We use these operators in decision making.
An operator is a symbol that operates on a value to perform specific mathematical or logical computations. They form the foundation of any programming language. In C++, we have built-in operators to provide the required functionality. An operator operates the operands. For example, int c = a + b;
Logical operators apply standard boolean algebra operations to their operands. Logical NOT. The logical NOT expression has the form. !expression. where. expression. - an expression of any scalar type. The logical NOT operator has type int. Its value is 0 if expression evaluates to a value that compares unequal to zero.