Why is the return type of main() usually int in C programs?

hard📝 Conceptual Q10 of 15

C - Basics and Execution Environment

ATo print output on the screen

BTo return an exit status to the operating system

CTo declare main as a void function

DTo allocate memory for the program

Step-by-Step Solution

Solution:

Step 1: Understand the role of main's return value
The return value of main is used to indicate success or failure to the operating system.
Step 2: Match the purpose with the correct option
Returning an int allows the program to send an exit status code back to the OS.
Final Answer:
To return an exit status to the operating system -> Option B
Quick Check:
Main returns exit status = int return type [OK]

Quick Trick: int main returns status code to OS after program ends [OK]

Common Mistakes:

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