HSC, C# - rextester

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//Rextester.Program.Main is the entry point for your code. Don't change it.
//Compiler version 4.0.30319.17929 for Microsoft (R) .NET Framework 4.5

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;

namespace Rextester
{
    public class Program
    {
        public static void Main(string[] args)
        {
            //Your code goes here
            string[] names = {"COGO:400","UNI:1046","IMAX:1970","SHENGHAI:1676"};
            float[] originals = {4.75f,0.855f,25f,0.585f};
            float[] nows = {4.35f,0.77f,20f,0.48f};
            float [] amount = {8000f,60000f,4000f,200000f};
            
            float x = 0.003577f;
            float tot = 0;
            for(int i = 0; i<originals.Count();i++){
            Console.WriteLine(names[i]);
            tot+=Calc(nows[i],originals[i],amount[i],x);
            }
            
            Console.WriteLine(tot);
        }
        
        public static float Calc(float n, float o, float s, float x){
            var ans = (n-o-o*x-n*x)*s;
            Console.WriteLine(ans);
            return ans;
        }
    }
}

Show compiler warnings [ + ] Show input
Compilation time: 0,17 sec, absolute running time: 0,08 sec, cpu time: 0,08 sec, average memory usage: 12 Mb, average nr of threads: 3