Logical Operators in C++

Logical operators are used to perform logical operations on the given expressions, mostly to test the relationship between different variables or values. They return a boolean value i.e., either true (1) or false (0) based on the result of the evaluation.

C++ provides the following logical operators:

• AND Operator (&&) The AND operator checks if both the operands/conditions are true, then the expression is true. If any one of the conditions is false, the whole expression will be false.

  (expression1 && expression2)

  Example:

  int a = 5, b = 10;
  if (a > 0 && b > 0) {
      cout << "Both values are positive." << endl;
  }

• OR Operator (||) The OR operator checks if either of the operands/conditions are true, then the expression is true. If both the conditions are false, it will be false.

  (expression1 || expression2)

  Example:

  int a = 5, b = -10;
  if (a > 0 || b > 0) {
      cout << "At least one value is positive." << endl;
  }

• NOT Operator (!) The NOT operator reverses the result of the condition/expression it is applied on. If the condition is true, the NOT operator will make it false and vice versa.

  !(expression)

  Example:

  int a = 5;
  if (!(a < 0)) {
      cout << "The value is not negative." << endl;
  }

Using these operators, you can create more complex logical expressions, for example:

int a = 5, b = -10, c = 15;

if (a > 0 && (b > 0 || c > 0)) {
    cout << "At least two values are positive." << endl;
}

This covers the essential information about logical operators in C++