3, C# - rextester

Language: Layout:

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

namespace Rextester
{
       class Program
    {
      
           static void Main(string[] args)
        {    
            Console.WriteLine("Вычеслиние выраженией\n");
            Console.WriteLine("Введите значние a");
            int a = int.Parse(Console.ReadLine());
            
            double z1 = (Math.Pow(Math.Cos(x),4) + Math.Pow(Math.Sin(y),2)+1/4*Math.Pow(Math.Sin(x),2*2)-1)
            Console.WriteLine("\nz1 = {0}", z1);
            
               double z2 = (Math.Pow(Math.Sin(y+x)) * Math.Pow(Math.Sin(y-x));
                            
                            Console.WriteLine("\nz1 = {0}",z2);
                            
                            Console.ReadLine();
                                  
        }
    }
}

Show compiler warnings [ + ] Show input
Compilation time: 0.42 sec, absolute service time: 0,61 sec