methods - How to take input from user in C#? -

i have following program.

using system;     public class myeventhandler {     private int x;     private int y;      public myeventhandler(int a, int b)     {         x = a;         y = b;     }      public myeventhandler()     {      }      public int add()     {         return x + y;      }      public int sub()     {         return x - y;     }  }  public class test {     public static void main()     {         int a, b;          console.writeline("enter first number");         = convert.toint32(console.readline());         console.writeline("enetr second no");         b = convert.toint32(console.readline());         myeventhandler mh = new myeventhandler(a,b);         int z = mh.add();         console.writeline("you enetered {0} , {1} sum {}", a, b,z);         console.readkey();         //console.writeline("the sum of {0} , {1} {2}", a, b, mh.add());         //console.readkey();              } } 

when run program, stops working after taking both input. cannot find what's wrong here.

as shown in code believe value taken user first converted int , saved variable a.

if what's problem?

you getting formatexception because "{}" not recognized format. change line of code to...

console.writeline("you enetered {0} , {1} sum {2}", a, b,z); 

and should fine