Expression

/*Write a program to check if in a given expression the brackets are put correctly.
Example of correct expression: ((a+b)/5-d).
Example of incorrect expression: )(a+b)).*/

namespace EX03.BracketsCheck
{
    using System;
    using System.Text;

    class BracketsCheck
    {
        static void Main(string[] args)
        {
            string textBarckets = Console.ReadLine();//"((a+b)/5-d)";
            int indexBackward = 0;
            int indexForward = 0;

            indexForward = textBarckets.IndexOf('(');
            indexBackward = textBarckets.IndexOf(')');

            BarcketsCheck(indexBackward, indexForward, textBarckets);
        }

        private static void BarcketsCheck(int indexBackword, int indexForward, string textBarckets)
        {
            if (indexForward >= 0 && indexBackword > 0 && indexForward < indexBackword)
            {
                indexForward = textBarckets.IndexOf('(', indexForward + 1);
                indexBackword = textBarckets.IndexOf(')', indexBackword + 1);

                BarcketsCheck(indexBackword, indexForward, textBarckets);
                return;
            }
            else if (indexForward == -1 && indexBackword == -1)
            {
                Console.WriteLine("Correct expression");
                return;
            }
            else
            {
                Console.WriteLine("Incorrect expression");
                return;
            }
        }
    }
}