小编pls*_*elp的帖子

我试图让这个递归程序计算它自己调用多少次,我打算使用一个全局变量来保持计数,但是eclipse因为某些原因没有识别它.这是我的代码:

#include <iostream>
#include <cstdlib>
using namespace std;

int count = 0;

int fib(long int);


int main()
{
    long int number;
    cout << "Enter a number => ";
    cin >> number;
    cout << "\nAnswer is: " << fib(number) << endl;
    return 0;
}

int fib (long int n)
{
    //cout << "Fibonacci called with: " << num << endl;
    if ( n <0 )
    {
        cout <<" error Invalid number\n";
        exit(1);
    }
    else if (n == 0 || n == …