hi i am trying to develop personal algorithem for calculator and i a made it to do functions like + and - and now i am trying to add another operator * and i got some issues with it please can someone tell me what is the problem so i can fix it thanks for helpers.
EXAMPLE
10+5*2=
using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace Math_algorithem_1 { class Program { static void Main(string[] args) { string targil = Console.ReadLine(); double result = 0; double tval = 0; //temp value for multiply or devision string value = ""; char sign = ' '; char tsign = ' '; double acc_val = 0; for (int i = 0; i < targil.Length && sign != '='; i++) { if (targil[i] != '+' && targil[i] != '-' && targil[i] != '=' && targil[i] != '*') //this is a number { value = value + targil[i]; } else //this is a sign +/- { result = Convert.ToDouble(value); //Console.WriteLine("Converted '{0}' to {1}.", value, result); if (sign == ' ') //first time sign detected { acc_val = result; } else if (targil[i] == '*')//at least second time sign detected { tval = result; tsign = sign; } else // sign is + or - { switch (sign) { case '+': acc_val = acc_val + result; break; case '-': acc_val = acc_val - result; break; case '*': tval = tval * result; switch (tsign) { case '+': acc_val = acc_val + tval; break; case '-': acc_val = acc_val - tval; break; case '*': tval = tval * result; break; } tval = 0; tsign = ' '; break; } //end switch } //end else sign is + or - //Console.WriteLine("Result " + acc_val); } //end else this is a sign +/- value = ""; sign = targil[i]; }//end of loop Console.Clear(); Console.WriteLine(targil + " " + acc_val); //Console.WriteLine(); } //end of void main } //end of class program }//end of Math_algorithem_1