总成本加起来

Question

我想让TotalCost把150加到它上面，如果面积大的话750再加50到TotalCost。

int TotalCost = 0; 
double Area = Convert.ToDouble(SurfAreaTxt.Text); 

if (WoodTxt.Text.ToLower() == mahogany) 
{ 
    TotalCost + 150; 
    if (Area > 750) 
    { 
     TotalCost += 50; 
    } 
    Console.Write(TotalCost); 
} 

Answer 1

你几乎已经有了它，只需将TotalCost + 150;更改为TotalCost += 150;即可。

在这里你去：

TotalCost = 0; 
double Area = Convert.ToDouble(SurfAreaTxt.Text); 

if (WoodTxt.Text.ToLower() == mahogany) 
{ 
    TotalCost += 150; 

    if (Area > 750) 
     TotalCost += 50; 

    Console.Write(TotalCost); 
}