IGDTUW 2025 — Computer PYQ

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Question

IGDTUW 2025 — Computer PYQ

IGDTUW | Computer | 2025

Which of the following variable declaration would not be compiled in a Java program?

Choose the correct answer:

Explanation

Solution

Java mein variable (identifier) ke naam rakhne ke kuch niyam hote hain. Unhi niyamo ke aadhar par iska solution ye hai:

Niyam (Rule):

Java mein koi bhi variable name kabhi bhi number (digit) se shuru nahi ho sakta.

$\text{Rule: Variable name cannot start with a digit (0-9).}$
Galat Declaration:

Option (d) mein variable ka naam 1_var hai, jo ki ek digit 1 se shuru ho raha hai. Is wajah se compiler error dega.

$\text{Invalid Name} = \text{1\_var}$

Nishkarsh (Conclusion):

Option (d) compile nahi hoga kyunki identifier digits se shuru nahi ho sakte. Sahi jawab hai:

\text{Correct Option} = \mathbf{(d) \ int \ 1\_var}