Fibonacci Series Up to a Certain Number

#include <stdio.h>
int main()
{
    int t1 = 0, t2 = 1, nextTerm = 0, n;

    printf("Enter a positive number: ");
    scanf("%d", &n);

    // displays the first two terms which is always 0 and 1
    printf("Fibonacci Series: %d, %d, ", t1, t2);

    nextTerm = t1 + t2;

    while(nextTerm <= n)
    {
        printf("%d, ",nextTerm);
        t1 = t2;
        t2 = nextTerm;
        nextTerm = t1 + t2;
    }
}

What is Fibonacci series *

OUTPUT