Thread: randomizing?

I get what your saying I haven't changed it yet because I originally had x as 8 and some other stuff thats why it still like that.

>>It's the wording that's wrong.
Oops. I just saw if(guess > x) and "guess" and "high"

>>becuase it doesn't generate a random number yet.
Sure it does. Well, you've forgot to seed the random-number generator by calling srand() at the top of main(), but what do you mean it doesn't generate a random number?

Code:

 int x = (((double)rand() / (double) (RAND_MAX + 1)) * (10 - 1 +1)) + 1;

[Warning] initilization from 'int' to 'double'
[Warning] argument from 'int' to 'double'
syntax error before do

Could you post a lil code or explain to me how to call srand plz?

How about you just go read the FAQ, like you've already been told?

Quzah.

And, it's been posted at least twice on the first page of this thread.

>> syntax error before do
Yes, like I pointed out, you're missing a ';' after int guess.

thanks, I already said I don't understand the FAQ.

Read the
FAQ

Was there not a whole bunch of discussion about this just recently?

How you cannot read basic material and understand it?
Yes it was discused but we still don't understand why you can't just read and comprehend simple material.

Originally Posted by Hunter2TwoMinutesAgo

And, it's been posted at least twice on the first page of this thread.

>> syntax error before do
Yes, like I pointed out, you're missing a ';' after int guess.

Jeez. Read some posts before you talk.

Alright, so before I skimmed it and it looked complicated.
This time I read it and believe I've made some progress.

Code:

#include <iostream>
#include <cstdlib>
#include <ctime>

using namespace std;

int main(int argc, char *argv[])
{
 srand ( (unsigned int) time (0));
 int x = (((double)rand() / (double) (RAND_MAX + 1)) * (10 - 1 +1)) + 1;
 int guess;

 do {
 cout << "im thinking of a number between 1 and 10\n";
 cout << "enter your guess please\n";

 cin >> guess;

 if (guess == x) {
 cout << "you are correct\n";
 }
 else if (guess < x) {
 cout << "guess a higher number\n";
 }
 else if (guess > x) {
 cout << "your not supposed to guess this high\n";
 }
 else {
 cout << "guess a lower number\n";
 }
 }while (guess != x);

 system("pause");
 return 0;
}

I know I haven't fixed everything else yet, but I added srand and the answer is 8 everytime I compile it.

Its in plain sight guy your logic for rand is way off.

Originally Posted by FAQ

Code:

#include <iostream>
#include <cstdlib>
#include <ctime>

int main()
{
  std::srand ( (unsigned int)std::time ( 0 ) );
  std::cout<< std::rand() / ( RAND_MAX / 10 + 1 ) <<std::endl;
  std::cout<< (int)( (double)std::rand() / ( RAND_MAX + 1 ) * 10 ) <<std::endl;

  return 0;
}

This code shows two methods to use the high order bits of rand() by calculating the high value of the range with RAND_MAX and then dividing the call to rand() by the result. The point where 1 is added to RAND_MAX is important to note, this forces the range of random numbers to be 1 through 10 instead of 0 through 9. Notice that the expression is forced into a floating-point context and then back into integer context. The reason for this is that rand returns a number smaller than RAND_MAX, and division of a by b where b is a large value results in 0 for integral operations (remember that the fractional half is truncated). Now you know how to create random numbers of any range, simply change 1 and 10 to whatever you want the low number and high number of the range to be respectively.

cgod you never cease to amaze me.....