waves

#include <iostream>
using namespace std;

int wave = 0;

int main() {
cout << "Please Enter a Wavelength: ";
cin >> wave;
cout << wave << "\n";

if ((wave >= 380) && (wave <= 449)){
    cout << "Violet";
}
else if ((wave >= 450) && (wave <= 494 )){
    cout << "Blue";
}
else if ((wave >= 495) && (wave <= 569)){
    cout << "Green";
}
else if ((wave >= 570) && (wave <= 589)){
    cout << "Yellow";
}
else if ((wave >= 590) && (wave <= 619)){
    cout << "Orange";
}
else if ((wave >= 620) && (wave <= 750)){
    cout << "Red";
}
else {
    cout << "Error: Not visible!";
}
return 0;
}