qfedu-basic-level/day7/homework/oh3.cpp

// 输入一个整数，输出它的斐波那契数列。
// 例如：输入10，输出1 1 2 3 5 8
#include <iostream>

using namespace std;

int main()
{
    int n;
    cout << "请输入一个整数：";
    cin >> n;

    int a = 1;
    int b = 1;
    int c = 0;

    if (n >= 1)
        cout << a << "\t";
    if (n >= 2)
        cout << b << "\t";

    while (n > 2 && c <= n)
    {
        c = a + b;
        if (c <= n)
            cout << c << "\t";
        a = b;
        b = c;
    }

    return 0;
}