[Solved] Why is it important for the main function to return an integer in C? — Ans: To indicate program execution status to the operating system | C

C - Basics and Execution Environment

Why is it important for the main function to return an integer in C?

ATo print output to the screen

BTo indicate program execution status to the operating system

CTo allocate memory for variables

DTo define the program's name

Step-by-Step Solution

Solution:

Step 1: Understand the role of main's return value
The integer returned by main signals success (usually 0) or failure (non-zero) to the OS.
Step 2: Eliminate incorrect options
Return value does not print output, allocate memory, or define program name.
Final Answer:
To indicate program execution status to the operating system -> Option B
Quick Check:
Main return signals status to OS [OK]

Quick Trick: Return 0 means success to OS [OK]

Common Mistakes:

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