code that mimic a shopkeeper services, counting stock, selling, billing

what does that have to do with artifical intelligence? And what about the code? you need to explain what you want a lot more than that.

Or Atleast some code maybe?

We won't do your homework for you. But I will give you a hint

#include <iostream>

int main()
{
    // put your code here
}

Man!! U have to explain a lot more than that you had

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