IGDTUW 2026 — Computer PYQ

Step-by-Step Explanation:

1. Variable Declaration:

   Two integer variables $a$ and $b$ are declared and initialized:

   $$a=3,b=4$$

2. Understanding the Logical AND Operator (&&):

   The expression inside cout is (a && b). The operator && represents the logical AND operation in C++. It evaluates the truth value of its operands.

3. Boolean Evaluation of Integer Values:

   In C++, any non-zero integer value is implicitly treated as true ($1$), and a value of zero ($0$) is treated as false ($0$).

   • Since $a=3$ (non-zero), $a$ is evaluated as true.

   • Since $b=4$ (non-zero), $b$ is evaluated as true.

4. Evaluating the Condition:

   The expression now becomes:

   $$\text{true}\&\&\text{true}\to \text{true}$$

   In C++, the built-in logical operators return a boolean value of true or false.

5. Output Generation:

   When printing a boolean value using cout, it defaults to its numeric representation unless the boolalpha formatter is used.

   • true is printed as $1$.

   • false is printed as $0$.

   Therefore, the program outputs:

   $$1$$