Write a program that inputs a wavelength value from the user and decides the color based on the following intervals:

#include <iostream>
using namespace std;
int main()
{
    cout<<"Please enter a wavelength value : ";//message to the user.
    int wavelen;
    cin>>wavelen; //taking wavelength as input from the user.
    if(wavelen>750||wavelen<380)   //if wavelength<380 or wavelength>750 Not 
        //a valid Wavelength
        cout<<"It is not a visible light.\n";
     if(wavelen>=380&&wavelen<450)
        cout<<"Violet\n";              //if wavelength is in between 380 and less than 450
     if(wavelen>=450&&wavelen<495)
        cout<<"Blue\n";                 //if wavelength is in between 380 and less than 450
     if(wavelen>=495&&wavelen<570)
        cout<<"Green\n";              //if wavelength is in between 465 and less than 570
     if(wavelen>=570&&wavelen<590)
        cout<<"Yellow\n";            //if wavelength is in between 570 and less than 590
     if(wavelen>=590&&wavelen<620)
        cout<<"Orange\n";   //if wavelength is in between 590 and less than 620
     if(wavelen>=620&&wavelen<750)
        cout<<"Red\n";         //if wavelength is in between 620 and less than 750
}