Thread: yay I made it all by myself

It worked because on your machine, with your compiler, today, the iostream header also included other headers that were enough to expose the srand, rand, and time functions.

BTW, nice job on making the working program on your own. That is a feat.

Originally Posted by Kybo_Ren

No, main() does not have to return anything. It must specify int as its return type, but it doesn't have to return anything.

there's a difference between what you can get away with and what's good programming style

Originally Posted by andyhunter

Yes, in C++ if no return value is specified for main a return value of 0 is implied by the compiler. However just as with the arguments for casting malloc, this is considered bad programming practice and should be avoided. You should always explicitly return a value from main.

If you are not using the return value, then it is perfectly acceptable, IMO, to let the implicit return 0 do its job. It is not considered bad programming practice. You might consider it to be poor style, I think it is better style than adding an unnecessary return 0 to the end of your program. Either way it is a style issue, and has no effect on the actual program under a standards conforming compiler.

http://www.research.att.com/~bs/bs_faq2.html#void-main

Originally Posted by Bjarne Stroustrup

In C++, main() need not contain an explicit return statement. In that case, the value returned is 0, meaning successful execution. For example:

Code:

    #include<iostream>

    int main()
    {
        std::cout << "This program returns the integer value 0\n";
    }

wow i still have no idea what im doing

Try to make a basic calculator that will ask each number separately:

Output: What operation do you need ?
Input: +
Output: a ?
Input: 5
Output: b ?
Input: 6
Output: 11