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C++ random between two choices ?

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C++ random between two choices ?

 
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  #1
Sep 24th, 2009
Can some help me with a random between two choices ?

Something like:

L = random(A, B);

and in L to have A or B.

Thx.
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Re: C++ random between two choices ?

 
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  #2
Sep 24th, 2009
Here's how to do it:

C++ Syntax (Toggle Plain Text) 
  1. int choices[2] = {2,3}; //choose between 2 and 3
  2. // Seed the random generator with srand()
  3. // Use rand() to pick either 0 or 1 and store in variable x
  4. int L = choices[x];

Google for srand() and rand() to find out how they work, or read this
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Re: C++ random between two choices ?

 
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  #3
Sep 24th, 2009
or u can do it as

C++ Syntax (Toggle Plain Text) 
  1. int random(int a, int b)
  2. {
  3.       srand(time(NULL));
  4.  
  5.       int r = rand()%2;
  6.  
  7.       if(r==0)
  8.             return a;
  9.       else
  10.             return b;
  11. }
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Re: C++ random between two choices ?

 
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  #4
Sep 24th, 2009
if random is used like random(high number)
why not do random(number)+15
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Re: C++ random between two choices ?

 
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  #5
Sep 24th, 2009
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Originally Posted by maxicube View Post
if random is used like random(high number)
why not do random(number)+15
sorry but i didn't get your question. Can u put some light on what u wanted to know.
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Re: C++ random between two choices ?

 
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  #6
Sep 24th, 2009
so if 0 is randoms starting number, you add 15 so... 15 is the minimum number
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Re: C++ random between two choices ?

 
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  #7
Sep 24th, 2009
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Originally Posted by maxicube View Post
so if 0 is randoms starting number, you add 15 so... 15 is the minimum number
offcourse..........

u can manipulate the random number in whatever way u want it.
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Re: C++ random between two choices ?

 
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  #8
Sep 24th, 2009
thx niek_e, but is there any other way how i to make this with a single line without to use much variables ? Idea is to pick one of these two chars A or B.

Like

char L = random(from char A, or char B);
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Re: C++ random between two choices ?

 
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  #9
Sep 24th, 2009
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Originally Posted by johndoe123 View Post
thx niek_e, but is there any other way how i to make this with a single line without to use much variables ? Idea is to pick one of these two chars A or B.

Like

char L = random(from char A, or char B);
u can use the function that i gave as

C++ Syntax (Toggle Plain Text) 
  1. char x = random('A', 'B');
just change its prototype to
C++ Syntax (Toggle Plain Text) 
  1. char random(char a, char b);

i hope thats simple enough. i guess thats simplest way to do it.
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Re: C++ random between two choices ?

 
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  #10
Sep 24th, 2009
hi there i'm new to this and I have a problem with dreamweaver and don't know who to ask.
when I try to view my pages with hitting F12 it keeps saying that I have a broken link and a DNS error.
can you point me in the right direction?
Thank you in advance
Robert
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