[C++] 비행기 최소 활주 길이

#include <iostream>

using namespace std;
double length(double velocity, double accelation);

int main(void)
{
	double sokdo;
	double gasokdo;
	
	cin >> sokdo; cin >> gasokdo;
	cout << "Speed and Accelation : " << sokdo << "m/s and " << gasokdo << "m/s^2\n";
	cout << "Minimum runway length : " << length(sokdo, gasokdo) << "m";
	return 0;
}

double length(double velocity, double accelation)
{
	double roadlength = (velocity * velocity) / (2 * accelation);
	return roadlength;
}