c# - Unexpected behaviour in ternary operator -

i came across weird behavior when changed if-else ternary operator return statement.

i've simplified code here:

class foo {     private bool condition;     private int intvalue = 1;     private decimal decimalvalue = 1m;      public object ternaryget     {                 {             return condition ? decimalvalue : intvalue;         }     }      public object ifelseget     {                 {             if (condition)                 return decimalvalue;             return intvalue;         }     }      public foo(bool condition)     {         this.condition = condition;     } }  class program     {         static void main(string[] args)         {             var footrue = new foo(true);             var foofalse = new foo(false);              console.writeline("{0}, {1}", footrue.ternaryget.gettype(), footrue.ifelseget.gettype());             console.writeline("{0}, {1}", foofalse.ternaryget.gettype(), foofalse.ifelseget.gettype());         }             } 

the output is:

system.decimal, system.decimal system.decimal, system.int32 

i'd expect second row output int32 on both getters, ternary i'm getting incorrect clr type int.

never mind code , it's trying - i'm curious why happening, if can explain it, i'd appreciate it.

result of ternary (conditional) operator of single type - one/both of options casted common type:

var result = condition ? decimalvalue : intvalue; 

type of result must known statically @ compile time. since there cast int decimal decimal type selected type of whole ? : operator.

so whole function can written (showing automatic casts):

public object turnaryget {         {         /*decimal*/ var result = condition ? decimalvalue : (decimal)intvalue;         return (object)result;     } }