[SOAL11]boiling_point_of_several_substances

// Khisby Al Ghofari, 06.2017.1.06852, Kelas B
#include <iostream>

using namespace std;

int main()
{
    int value,water,mercury,copper,silver,gold,water_p,mercury_p,copper_p,silver_p,gold_p;
    string substance;
    cout << "\n==============================================\n";
    cout << "Welcome To \n";
    cout << "Application Boiling Point of Several Substances\n";
    cout << "================================================\n \n";

    cout << "Enter the value of boiling point : ";
    cin >> value;


    water = 100;
    mercury = 357;
    copper = 1187;
    silver = 2193;
    gold = 2660;

    water_p = water*5/100;
    mercury_p = mercury*5/100;
    copper_p = copper*5/100;
    silver_p = silver*5/100;
    gold_p = gold*5/100;

    if(value >= water-water_p && value <= water+water_p){
        substance = "Water";
    }else if(value >= mercury-mercury_p && value <= mercury+mercury_p){
        substance = "Mercury";
    }else if(value >= copper-copper_p && value <= copper+copper_p){
        substance = "Copper";
    }else if(value >= silver-silver_p && value <= silver+silver_p){
        substance = "Silver";
    }else if(value >= gold-gold_p && value <= gold+gold_p){
        substance = "Gold";
    }else{
        cout << "Substance Unknown";
        return 0;
    }

    cout << "The value of boiling point is :" << substance;

}