How to get computer to guess a number given only "guess higher" or "guess lower" commands?

[ccrowley96]

srand((unsigned)time(0));
	int MyNumber = rand()%(100);

I have this (I don't understand what it means) but I am able to generate a random number. I want the console to display a random number, then the user to tell the console either higher or lower, and in turn the console with generate another number that is (hopefully) closer to the users number.

[Zaita]

srand((unsigned)time(0));
This will initialise the random number generator with a seed based on the current time. This ensures every time you run your application the list of numbers generated from the random number generator will be different.

int MyNumber = rand()%(100);
This says generate a random number rand() and then using the modulus operation take the remainder of that number when divided by 100. Store the result in MyNumber.

Functionally, this will return a random number between 0 and 99.

If you want it to generate a random number between 2 values (high and low) you need to calculate the difference between them. Once you have the difference between them you can take a random number and get the remainder when divided by the difference. Finally add this new random number to your low value and you have a random value between high and low.

note: When calculating difference you need to consider if low and high are both value values.

e.g high = 9, low = 6.
difference = 9 - 6 = 3.

Difference is wrong if both low and high cannot be guessed. So you need to adjust it based on if your low/high are valid.


Yes. It would've been quicker to type you the 2 lines of code required, but then you won't learn anything :)

[ccrowley96]

Thanks for the clarification!