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Is void main correct in C?

Is void main correct in C?

No. It’s non-standard. The standard prototype of main is int main() with the optional command line arguments argc and argv . The int returned by main() is a way for a program to return a value to the system that invokes it.

Should I use void or int?

when you use void, it means you don’t want anything returned from the function. while an int return may be a result of calculation in the function, or indicate the status when it returning, such as an error number or something else that can tell you what has happened when the function executing.

Is it fine to write void main () or main () in C?

Even if your compiler accepts “void main()” avoid it, or risk being considered ignorant by C and C++ programmers. It is never a good idea to use “void main()” or just “main()” as it doesn’t confirm standards. It may be allowed by some compilers though.

Why don’t we use void main in C?

If we used int main(void) , the compiler will stop, giving an error, since startup code (in this environment) is trying to call main with two arguments. If we use int main() nothing happens and the code gets compiled correctly.

Is int main better than void main?

When some value is returned from main(), it is returned to operating system. The void main() indicates that the main() function will not return any value, but the int main() indicates that the main() can return integer type data. So it is good practice to use int main() over the void main().

What is the difference between int main () and int main void?

So the difference is, in C, int main() can be called with any number of arguments, but int main(void) can only be called without any argument. Although it doesn’t make any difference most of the times, using “int main(void)” is a recommended practice in C.

When we use void main and int main?

The void main() indicates that the main() function will not return any value, but the int main() indicates that the main() can return integer type data. When our program is simple, and it is not going to terminate before reaching the last line of the code, or the code is error free, then we can use the void main().

Are void functions bad?

When a method operates on local data in the class, a void method is perfectly reasonable, as long as it models some “behaviour” that makes sense in the context of the class. For example, if you have a SpecialSortedList that sorts its contents, i.e. myList.

Why void main is wrong?

Therefore, the designers could choose void main() and require the use of System. exit() for non-zero exit codes. So, the thing that would be “wrong” with choosing void main() for the C++ standard would be that it would break existing code that expected to use return and an exit code value from main() .

Is void main bad?

Why we should not use void main?

If you write the whole error-free main() function without a return statement at the end then the compiler automatically adds a return statement with proper datatype at the end of the program. To summarize the above, it is never a good idea to use “void main()” or just “main()” as it doesn’t confirm standards.

What is difference between void and int?