main() is main function in Programming Language where coding should be done.
There are different ways to write this main function.
1. void main()
- The return type of the function “main” is void, i.e. it does not return anything to the OS.
- Nothing has been said about the arguments in main, which means that you can either pass the arguments to main or not pass anything at all.
2. int main(void)
- The return type of the function is “int”, i.e. it is supposed to return an integer value to the OS.
- “void” means that you’re not allowed to pass any argument to the main. Doing this would result into a compiler
3. int main()
- The return type of the function is “int”, i.e. it is supposed to return an integer value to the OS.
- Nothing has been said about the arguments in main, which means that you can either pass the arguments to main or not pass anything at all
4. void main(void)
- The return type of the function “main” is void, i.e. it does not return anything to the OS.
- “void” means that you’re not allowed to pass any argument to the main. Doing this would result into a compiler error.
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