/* Dasproc C - 2019
William Handi Wijaya
0087

Menentukan jenis gelombang
*/

#include<stdio.h>

int main(){
    //variable declarations
    double input; // input - user's wavelength
    //looping program
        //get the value of wavelength and displays it
    printf("Enter the wavelength -> ");
    scanf("%lf", &input);
    while(input!=0){
        if(input<=3E-11){
            printf("It is gamma ray.\n"); //displaying
        } else if (input<=3E-9){
            printf("It is X-ray.\n"); //displaying
        } else if(input<=4E-7){
            printf("It is Ultraviolet.\n"); //displaying
        } else if(input<=7E-7){
            printf("It is visible.\n"); //displaying
        } else if(input<=1.4E-5){
            printf("It is infrared.\n"); //displaying
        } else if(input<=0.1){
            printf("It is microwave.\n"); //displaying
        } else {
            printf("It is radio wave.\n"); //displaying
        }
        printf("Enter the wavelength -> ");
        scanf("%lf", &input);
    }
    printf("Program ends.");
    return 0;
}