Exemplu Random

#include <stdio.h>
#include <stdlib.h>
#include <time.h>

int main ()
{
    int nrExtrageri;
    int nrBileAlbeExtrase = 0;  //0
    int nrBileNegreExtrase = 0; //1
    int i;

    printf("Numar de extrageri : ");
    scanf("%d",&nrExtrageri);

    for(i = 1 ; i <= nrExtrageri ; i++)
    {
        srand(time(NULL)); // initializare seed pentru random
        if ( rand() % 2 == 0 )
            nrBileAlbeExtrase++;
        else
            nrBileNegreExtrase++;
    }
    printf("S-au extras %d bile albe si %d bile negre", nrBileAlbeExtrase, nrBileNegreExtrase);

    return 0;
}