rand() function?

[klamor]

So one of my assignments in my programming class is to make a program that will generate 5 random cards (from a deck)...

i searched some sites off of google, but none of them really helped me. i'm just looking for what i need to include to use this function and what the syntax is... thanks

[schlumpf]

srand ( time(NULL) );
int onetofive = rand( void ) % 5 + 1;

protip: "c++ rand". or just go to http://www.cplusplus.com/reference/c.../cstdlib/rand/ yourself.

[Confucius]

I actually have code for a program that does this exact thing but for a dice so if you want to know the code pm me

[Cromon]

srand ( time(NULL) );
int onetofive = rand( void ) % 5 + 1;

Do not use % (modulus) to limit the random numbers generated. The randomness is heavily reduced.

inline unsigned int random(unsigned int high)
{
	return unsigned int(((rand() / float(RAND_MAX)) * high) + 0.5);
}

[Xel]

x = rand()%(maxvalue-minvalue)-minvalue;

so if you wanted a number between 13 and 200 it would be

x = rand()%(200-13)-3;

Basically it does this:
1) Random number, lets say 2331
2) Divide with 200-13 which is 187
3) Answer 12 remainder 2331-(12*187)= 87
4) Random number is the remainder so it's 87.

[Cromon]

1. Do not use % !!! you just ****ing kill randomness (search google for articles about that).

2. x = unsigned int(((rand() / float(RAND_MAX)) * (maxval - minval) + 0.5) + minval;

[Xel]

Oh, I understand..

Well, do as Cromon states.