--- In [email protected], Ray Devore <[EMAIL PROTECTED]> wrote: > > --- Tomoyo Daidouji <[EMAIL PROTECTED]> wrote: > > Hi all, > > > > I need to write a recursive function to calculate > > a^n. When the > > function call ends, it needs to return the number of > > multiplications > > it did. I've written the code, which calculates a^n, > > but I can't get > > the count to work properly. Could you tell me where > > I'm going wrong. > > I'm getting the following error: > > > > power_alg.cpp:33: error: reference to âcountâ is > > ambiguous > > power_alg.cpp:5: error: candidates are: int count > > > > Below is the complete code I'm using. > > > > > > #include <iostream> > > using namespace std; > > > > int count = 0; > > float Power(float a, int n) > > { > > float result; > > > > if (n == 0) > > { > > result = 1; > > count = 0; > > } > > else if (n == 1) > > { > > result = a; > > count = 0; > > } > > else if (n % 2 == 0) > > { > > result = Power(a*a, n/2); > > count++; //count as one multiplication > > } > > else if (n % 2 == 1) > > { > > result = Power(a*a, (n-1)/2) * a; > > count += 2; //count as two multiplications > > } > > > > return result; > > > > } //end Power function > > > > int main() > > { > > float a; > > int n; > > > > cout << "Please enter a number: "; > > cin >> a; > > > > cout <<"Please enter the power you're raising the > > number to: "; > > cin >> n; > > > > float answer = Power(a, n); > > > > cout << "The result is: " << answer << endl; > > cout << "The number of multiplications it takes > > is: " << count << > > endl; > > > > } //end main function > > > > I would appreciate it very much if someone could > > help me out here. > > > > Thanks, > > Chai. > > > > > Chai, > > I complied your code and didn't have any problems. > What compiler are you using? Did you copy your code > into the e-mail or did you retype it? > > Ray
Ray, I copied the code into the email. I'm not really sure what compiler the university is using. The OS I'm compiling it is linux, if that makes any difference. Chai.
