program6-8.c

// Generate Fibonacci Numbers Using Variable Length Arrays

#include <stdio.h>

int main (void)
{
    int i, numFibs;

    printf ("How many Fibonacci numbers do you want (between 1 and 75)? ");

    scanf("%5i", &numFibs);

    if (numFibs < 1 || numFibs > 75)
    {
        printf("Bad number, sorry!\n");
        return 1;
    }

    unsigned long long int Fibonacci[numFibs];

    Fibonacci[0] = 0;   // by definition
    Fibonacci[1] = 1;   // ditto

    for (i = 2; i < numFibs; ++i)
        Fibonacci[i] = Fibonacci[i-2] + Fibonacci[i-1];

    for (i = 0; i < numFibs; ++i)
        printf("%llu ", Fibonacci[i]);

    printf("\n");

    return 0;

}