Definition
while loop என்பது ஒரு condition True இருக்கும் வரை code block-ஐ repeatedly execute செய்யும் l……
Iteration in Python - while Loop
while loop என்பது ஒரு condition True இருக்கும் வரை code block-ஐ repeatedly execute செய்யும் loop. தமிழில்: கொடுக்கப்பட்ட condition True இருக்கும் வரை ஒரே statements மீண்டும் மீண்டும் execute ஆகும். Condition False ஆனதும் loop stop ஆகும்.
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41 programs 9 MCQs v4
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Program
Example
இதில்: i…
Flow
Initialization ↓ Check Condition ↓ True ? ───── No ───→ Stop……
Explanation
initialization…
Program
Example
Important
Important 3 parts
while loop-ல் முக்கியமாக மூன்……
Important
1. Initialization 2. Conditio……
Program
Example
Explanation
Again check: 6…
Important
Very important
while loop condition ஒவ்வொரு iteration-க்கும் முன்பு check செய்யப்படும். அதனால்……
Explanation
False at beginning
i = 10 while i…
Output
Result
அதனால் loop body ஒரு முறை கூட……
Explanation
Increment
Increasing loop: i = 1 while i…
Explanation
Decrement
Reverse counting செய்ய: i = 5……
Explanation
Short form
i -= 1 means: i = i - 1…
Program
Program - 10 to 1
Explanation
Infinite loop
Infinite Loop என்றால் என்ன? Cond……
Program
Example
Explanation
இதில் i update செய்யவில்லை. i……
Explanation
Common cause of infinite loop
Most common reason: Update st……
Explanation
While true
Intentional infinite loop: while True: print("Running") True எப……
Explanation
Break
break entire loop-ஐ immediate……
Program
Example
Dry Run
Dry run break
Explanation
Continue
continue current iteration மட……
Program
Example
Important
Important continue point
இந்த program-ல் update: i += 1 continue-……
Comparison
Break vs continue
Explanation
Pass
pass எந்த operation-மும் செய்……
Program
Example
Explanation
ஆனால் இங்கே update இல்லாததால்……
Explanation
pass simply placeholder.…
Explanation
Even numbers
Print even numbers 2 to 10 Me……
Explanation
Even with if
i = 1 while i…
Explanation
Odd numbers
i = 1 while i…
Explanation
Sum 1 to 5
i = 1 total = 0 while i…
Dry Run
Dry run sum
Table
Multiplication table
n = 5 i = 1…
Table
while i…
Explanation
Factorial
5 factorial: 5! = 5 × 4 × 3 ×……
Input
User input
Explanation
Example
password = ""…
Explanation
Condition: password != "Pytho……
Real Life Example
Real time example
ATM PIN example: pin = "" while pin != "3690": pin = in……
Explanation
While else
Python-ல் while உடன் else பயன……
Important
Important while else
Loop normally condition False ஆகி finish ஆனா……
Program
Example
Completed print ஆகாது.…
Explanation
Nested while
ஒரு while loop உள்ளே மற்றொரு ……
Program
Example
Explanation
i += 1…
Dry Run
Dry run nested
Comparison
For vs while
Real Life Example
Example difference
Using for for i in range(1, 6……
Explanation
When to use for
Use for when: Number of repetitions is k……
Explanation
When to use while
Use while when: Number of repetitions is not known Repeat……
Important
for How many times? Often known. while Until w……
Common Mistake
Error 1
Forgetting update Wrong: i = ……
Output
Result
Program
Correct
Common Mistake
Error 2
Wrong condition i = 1 while i >= 5: print(……
Common Mistake
Error 3
Missing colon Wrong: while i…
Common Mistake
Error 4
Missing indentation Wrong: wh……
Common Mistake
Error 5
Update in wrong direction i =……
Remember
I C U I = Initialization i = ……
TRB Point
1. while loop is used for?…
TRB Point
Condition-based repetition.…
TRB Point
1. while condition executes w……
TRB Point
True…
TRB Point
1. Condition False என்றால்?…
TRB Point
Loop stops.…
TRB Point
1. while is which type of loo……
TRB Point
Entry-controlled loop…
TRB Point
1. Infinite loop commonly occ……
TRB Point
Update missing / condition ne……
TRB Point
1. Entire loop terminate செய்……
TRB Point
break…
TRB Point
1. Current iteration skip செய……
TRB Point
continue…
TRB Point
1. Placeholder statement?…
TRB Point
pass…
TRB Point
1. Can Python while have else?…
TRB Point
Yes…
TRB Point
1. while True: means?…
TRB Point
Potential infinite loop unles……
Interview Point
Question: What is a while loop? A while loop repeatedly executes a block of code as long as its condition eva……
Program
Example
Explanation
Initial condition itself is False. So bo……
Program
Example
Explanation
or a condition that never becomes False. Question: Difference between for and while? ……
MCQ
A while loop executes while c……
MCQ
while is a:…
MCQ
What is output? i = 1 while i…
MCQ
Which can cause infinite loop?…
MCQ
Which statement terminates th……
MCQ
Which skips only current iter……
MCQ
What happens here? while Fals……
MCQ
What is while True: normally?…
Dry Run
1 → 2 2 → 3 3 → 4 Then: 4 < 4……
MCQ
What happens when condition i……
Practice
Practice 1
Print 1 to 10 i = 1 while i…
Practice
Practice 2
Print 10 to 1 i = 10 while i ……
Practice
Practice 3
Print Even Numbers i = 2 whil……
Practice
Practice 4
Print Odd Numbers i = 1 while……
Practice
Practice 5
Sum 1 to 10 i = 1 total = 0 w……
Summary
Iteration │ ├── for └── while while ……
Remember
Condition True → Continue Condition False → Stop Main loop control statements: break → Stop entire loop ……
Explanation
Short description
while loop என்பது ஒரு Boolean condition True இருக்கும் வரை statements-ஐ repeated-ஆ execute செய்யும் Python it……
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