Most Asked Programming Basics Interview Questions (Fresher Level)

Q1. What is a Variable?

A variable stores data that can change during program execution.

Example (C):

int age = 21;

Here, age stores an integer value.

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Q2. Difference Between Compiler and Interpreter

A compiler translates the whole program at once, while an interpreter translates line by line.

Example:

• C/C++ → Compiler
• Python/JavaScript → Interpreter

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Q3. What is a Data Type?

Data type defines the type of data a variable can store.

Examples: int, float, char, string

float price = 99.50f;

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Q4. What is a Loop?

A loop repeats a block of code until a condition is met.

Example (Python):

for i in range(3):
    print(i)

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Q5. What is Debugging?

Debugging is the process of finding and fixing errors in code.