#include <stdio.h>
 
// Function declaration
void fibonacci(int n);
 
int main() {
    int n;
 
    // Input number of terms
    printf("Enter the number of terms: ");
    scanf("%d", &n);
 
    // Validate input
    if (n <= 0) {
        printf("Please enter a positive integer.\n");
    } else {
        printf("Fibonacci Series up to %d terms:\n", n);
        fibonacci(n);   // Function call
    }
 
    return 0;
}
 
// Function definition
void fibonacci(int n) {
    int a = 0, b = 1, next, i;
 
    for (i = 1; i <= n; i++) {
        printf("%d ", a);
        next = a + b;
        a = b;
        b = next;
    }
    printf("\n");
}