practice/blackjack/copy_pasta_test.c

    #include <stdio.h>

    #include <math.h>

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

     

     

    static int rand_int(int n) {

        int limit = RAND_MAX - RAND_MAX % n;

        int rnd;

     

        do {

            rnd = rand();

        } 

        while (rnd >= limit);

        return rnd % n;

    }

     

    void shuffle(int *array, int n) {

        int i, j, tmp;

     

        for (i = n - 1; i > 0; i--) {

            j = rand_int(i + 1);

            tmp = array[j];

            array[j] = array[i];

            array[i] = tmp;

       }

    }

    int main(void)

    {
time_t t;
srand((unsigned) time(&t));
     

        int i = 0;

        int numbers[50];

        for (i = 0; i < 50; i++)

            numbers[i]= i;

        shuffle(numbers, 50);

        printf("\nArray after shuffling is: \n");

        for ( i = 0; i < 50; i++)

            printf("%d\n", numbers[i]);

        return 0;

    }