方法'METHOD'没有重载需要0个参数

Question

I have 3 methods.

1 method holding the value of 3000 1 method holding the value of 0.13

and I have created another method that I want to multiply these two figures together.

public override int FishPerTank()
{                
    return 3000;                
}

public override double WeightOut(double weightOut, double weightIn)
{
    return 0.13;
}

public override int HowMuchTheFishWeighOutKG()
{
    return (FishPerTank() * WeightOut());
}

I am receiving the syntax error on the WeightOut here:

public override int HowMuchTheFishWeighOutKG()
{
    return (FishPerTank() * WeightOut());
}

Answer 1

WeightOut 2个参数而你没有提供它们

Answer 2

WeightOut(double weightOut, double weightIn) is declared with two parameters and you're calling it with none. Hence the error.

Answer 3

WeightOut()  

expects two parameters. But why ? You don't use them.

Rewrite your method without the 2 parameters

public double WeightOut()
{
   return 0.13;
}

Answer 4

You probably want to change

public override double WeightOut(double weightOut, double weightIn)
{
    return 0.13;
}

to

public override double WeightOut()
{
    return 0.13;
}

as you aren't using the parameters.

also why the override? May need to remove that if removing the parameters causes another syntax error, or fix it in the base class as well.