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- #include <iostream>
- int numofcalls;
- int Fibonacci(int nNumber)
- {
- numofcalls++;
- if (nNumber == 0)
- return 0;
- if (nNumber == 1)
- return 1;
- return Fibonacci(nNumber-1) + Fibonacci(nNumber-2);
- }
- // And a main program to display the first 13 Fibonacci numbers
- int main(void)
- {
- using namespace std;
- int num;
- for (int iii=0; iii < 13; iii++) {
- numofcalls = 0;
- num = Fibonacci(iii);
- cout << "The " << iii << "th Fibonacci number is " << num << "; it took " << numofcalls
- << " calls to calculate it." << endl;
- }
- return 0;
- }
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