Learn C Language from the Best Tutors
Affordable fees 1-1 or Group class Flexible Timings Verified Tutors Search in
Asked by Sweetu Last Modified
Answer 
Aman Mishra
Tutor
No, main() can only return int. The reason being it is the way C/C++ is built. If you are still not convinced then the more detailed answer would be that because the result value of main() is passed to the exit() system call on UNIX systems.
The exit() system call takes a single integer argument which is stored in the PID info record in the kernel, and can then be retrieved by the calling process when they call one of the wait() family of system calls.
This method of passing a return code through the PID info has been around since the earliest days of UNIX, which was written in C.
In UNIX, processes typically return a success/failure code in this space, so that the calling process. Making the return code from main() the same value is just a simple shortcut.
But then I know you didn't get anything, that is why I wrote in the simplest way in the First few line of the answer.
Do not forget to like my answer in case I solved your doubt. "Like" keeps me motivated.
read lessRelated Questions
Now ask question in any of the 1000+ Categories, and get Answers from Tutors and Trainers on UrbanPro.com
Ask a QuestionRecommended Articles
Brilliant Academy, a reputed B. Tech Tuition...
Brilliant Academy is one of the reputed institutes for B.Tech tuition classes. This institute is specialised in delivering quality tuition classes for B.E, Engineering - all streams and Engineering diploma courses. Incorporated in 2012, Brillant Academy is a brainchild of Mr Jagadeesh. The main motto of the academy is to...
Read full article >
Lasya Infotech: An educational Training...
Lasya Infotech is a Hyderabad based IT training institute founded in 2016 by O Venkat. Believing in his innovation, passion and persistence and with a diverse blend of experience, he started his brainchild to deliver exemplary professional courses to aspiring candidates by honing their skills. Ever since the institute envisions...
Read full article >
Make a Career as a BPO Professional
Business Process outsourcing (BPO) services can be considered as a kind of outsourcing which involves subletting of specific functions associated with any business to a third party service provider. BPO is usually administered as a cost-saving procedure for functions which an organization needs but does not rely upon to...
Read full article >
Make a Career in Mobile Application Programming
Almost all of us, inside the pocket, bag or on the table have a mobile phone, out of which 90% of us have a smartphone. The technology is advancing rapidly. When it comes to mobile phones, people today want much more than just making phone calls and playing games on the go. People now want instant access to all their business...
Read full article >
Looking for C Language Classes?
Learn from the Best Tutors on UrbanPro
Are you a Tutor or Training Institute?
Join UrbanPro Today to find students near youThe best tutors for C Language Classes are on UrbanPro
The best Tutors for C Language Classes are on UrbanPro
6
