피보나치

public static void main(String[] args) {
    int a = 0, b = 0, c = 1;
 
    int sum = 1;
    System.out.print("1 + ");
 
    for (;;) {
        a = b;
        b = c;
        c = a + b;
 
        sum += c;
 
        System.out.printf("%d + ", c);
 
        if (c == 34) {
            System.out.printf("\b\b= %d", sum);
            break;
        }
    }
}
 
 
1 + 1 + 2 + 3 + 5 + 8 + 13 + 21 + 34 = 88