>_<.

#include <stdio.h>

void swap(int *x, int *y) {
    int temp = *x;
    *x = *y;
    *y = temp;
}

void random_shuffle(int *array, int size) {
    int i, temp;
    
    for(i = 2; i < size; i++)
        swap(&array[i], &array[rand() % i]);
}

int main(int argc, char **argv) {
    int i;
    int lotto[45];
    
    for(i = 0; i < 45; i++)
        lotto[i] = i + 1;

    random_shuffle(lotto, 45);

    for(i = 0; i < 5; i++)
        printf("%d\n", lotto[i]);

    return 0;
}

6
30
13
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26

#include <stdio.h>

void function1(int array[], int size) {
    int i;
    for(i = 0; i < size; i++)
        printf("%d ", array[i]);
    printf("\n");
}

void function2(int *array, int size) {
    int i;
    for(i = 0; i < size; i++)
        printf("%d ", array[i]);
    printf("\n");
}

void function3(int *first, int *last) {
    for( ; first != last; first++)
        printf("%d ", *first);
    printf("\n");
}

int main(int argc, char **argv) {
    int a[10] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};

    function1(a, 10);
    function2(a, 10);
    function3(a, a + 10);

    return 0;
}
    

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