C++ AND (&&) Logical Operator

In this C++ tutorial, you will learn about AND Logical operator, and how to use AND logical operator with boolean values, and how to combine simple conditions and form compound conditions, with example programs.

C++ AND Logical Operator

C++ AND Logical Operator is used to combine two or more logical conditions to form a compound condition. && is the symbol used for C++ AND Operator.

C++ AND Operator takes two boolean values as operands and returns a boolean value.

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operand_1 && operand_2

Truth Table

Following is the truth table of C++ AND logical operator.

Operand 1	Operand 2	Returns
true	true	true
true	false	false
false	true	false
false	false	false

C++ AND returns true only if both the operands are true.

Example

Following example demonstrates the usage of AND logical operator (&&) with different boolean values.

C++ Program

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#include <iostream>
using namespace std;

int main() {
   cout << (true && true) << endl;
   cout << (true && false) << endl;
   cout << (false && true) << endl;
   cout << (false && false) << endl;
}

Output

AND Operator to form compound conditions

Following example demonstrates the usage of AND logical operator (&&) in combining boolean conditions and forming a compound condition.

C++ Program

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#include <iostream>
using namespace std;

int main() {
   int a = 10;

   if ((a < 100) && (a%2 == 0)) {
      cout << "a is even and less than 100." << endl;
   }
}

Output

a is even and less than 100.

In the above example, a<100 is a condition that checks if a is less than 100 and a%2==0 is another condition that checks if a is even number.

If we would like to check if the condition both the conditions a<100 and a%2==0 is true, we use C++ AND logical operator.

Conclusion

In this C++ Tutorial, we learned what C++ AND Logical Operator is, and how to use it with conditional expressions.

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C++ AND