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Home Forums What is the difference between void main and int main in C/C++? – MindStick
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1 Answers

Aryan Kumar
Aryan Kumar 10 Jul 2023
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In C++, the main() function is the entry point for all C++ programs. It is the first function that is called when the program starts executing. The main() function can have two different return types: void or int.

  • void main() indicates that the main() function does not return any value. This is the most common way to define the main() function.
  • int main() indicates that the main() function returns an integer value. This value can be used by the operating system to determine the status of the program. For example, if the program terminates normally, the main() function will return the value 0. If the program terminates abnormally, the main() function will return a non-zero value.

It is important to note that the main() function must always have a return type. Even if you do not want the main() function to return any value, you should still use the void return type.

Here are some examples of how to define the main() function:

C++

// void main()
void main() {
  // Do something
}

// int main()
int main() {
  // Do something
  return 0;
}

In general, you should use void main() unless you have a specific reason to use int main().

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