1.32 – Dry Run + Execution: First Digit of 3-Digit Number | Python Programming – New Series

Описание: 📝 Video Description

Welcome to the Python Programming – Complete Course (New Series) by Burle Sharma.

In this class (1.32), we continue from the previous lesson (Class 1.31).
Here, we take the same program and:

✔ Perform a detailed dry run step-by-step
✔ Execute the program using an online compiler

We understand how Python evaluates the integer division operator // to extract the first digit of a 3-digit number.

This video ensures you not only write the program — but fully understand the logic behind the output.

🎓 What you’ll learn in this video

• How to trace a program manually before running it
• Step-by-step dry run with variable values
• Using integer division (//) to remove digits from the right
• Understanding the logic:

first = number // 10
second = first // 10


• Executing the program in an online compiler
• Verifying output with the expected result
• Logical thinking for digit-based problems

🧠 Key Learning Point

Dry run helps you:

• Predict the result before execution
• Avoid logical errors
• Build strong programming fundamentals

For a 3-digit number:

✔ //10 removes last digit

This mathematical logic is used in competitive exams and number manipulation programs.

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