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I know this question might seem weird, maybe I'm just overthinking, but this is really troubling me because I've been a computer engineer for some time now and conditionals (if statements for instance) always seemed pretty clear and intuitive!
I mean, let's assume that I have a program which starts at
int main(int argc, char** argv) // in C
How am I supposed to know what is inside argv and argc? My old, intuitive answer: if statements. Using if statements, I would decide based on the input how to execute my program... I never considered any possibility other than having the input provided under this way, and I, as a programmer, could only mess with what is after the call to the program, with the input already defined. Hence I had no doubt that I needed to use conditionals.
I have ONLY 1 PROGRAM that needs to execute for ANY input and provide the right answers, hence I can't avoid if statements. It all seemed alright, for years now... until I started to think... Could there be other ways?
What if I had a different version of my program for each possible input? The operating system or the hardware could then call a different version according to the input. Then I thought – this would simply delegate the if statements to either the operating system or the hardware, respectively.
Then I even thought, what if the user had a different computer for each different input? I know this might seem really stupid, but I'm just trying to understand the "law" behind the need for conditionals in our physical world!
Also, in this last example it could be argued that the conditional would simply have to be executed in the user's brain (when he decides which computer to use based on the intended input).
Can someone give me some light in this subject? This is really troubling me :( maybe I've overthought things and now I'm paying the price for it...