console.WriteLine("Please enter operand 1")
operand1=console.Readline()
console.WriteLine("Please enter opeand 2")
operand2=console.Readline()
console.WriteLine("Please enter operation")
operation=console.ReadLine()
console.WriteLine(operand1+operand2)
console.WriteLine(operand1-operand2)
console.WriteLine(operand1*operand2)
console.WriteLine(operand1/operand2)