[Solved] Why does a variable declared inside a block (like an if or for) in C not exist outside that block? — Ans: Because its lifetime and visibility are limited to that block's scope | C

C - Variables and Data Types

Why does a variable declared inside a block (like an if or for) in C not exist outside that block?

ABecause its lifetime and visibility are limited to that block's scope

BBecause C does not allow variables inside blocks

CBecause variables inside blocks are automatically global

DBecause variables inside blocks are static by default

Step-by-Step Solution

Solution:

Step 1: Define block scope rules
Variables declared inside a block have scope limited to that block, meaning they exist only during execution of that block.
Step 2: Explain lifetime and visibility
Such variables are created when block starts and destroyed when block ends, so they cannot be accessed outside.
Final Answer:
Because its lifetime and visibility are limited to that block's scope -> Option A
Quick Check:
Block scope limits variable lifetime and visibility [OK]

Quick Trick: Block scope limits variable lifetime and visibility [OK]

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