Computes the fibonacci nums

fibonacci.c

#include <stdio.h>

int fibonacci(int n) {

    int a = 1, b = 1, next;

    for (int i = 0; i < n; i++) {

        if(i <= 1) {
            next = i;
        } else {
            next = a + b;
            a = b;
            b = next;
        }
    }
    return next;
};

int main() {

    printf("Please enter the positive integer:");

    int n;
    while (scanf("%d", &n) != EOF) {
        if (n > 0) {
            printf("Fibonacci num is: %d", fibonacci(n));
            printf("\n");
        } else {
            printf("Please, enter positive number");
        }
    }
    return 0;
}