Question

JAVA编译提示java:34: error: 'else' without 'if'

不知道错在哪里？
// HouseSign.java - This program calculates prices for custom house signs.

public class HouseSign
{
public static void main(String args[])
{
// This is the work done in the housekeeping() method
// Declare and initialize variables here.
double charge;
String color_char;
String wood_type;
int basis_letter;
double min_charge= 30.00;
double color_charge=12;
double wood_typeCharge=15;
double letter_Charge=3;
double add_charge;
double chr_charge;

// Charge for this sign.
charge= min_charge + add_charge;
// Number of characters.
basis_letter = 8;
// Color of characters.
color_char="gold";
// Type of wood.
wood_type = "oak";
// This is the work done in the detailLoop() method
// Write assignment and if statements here as appropriate.
if (color_char.equals("gold"));

color_charge=12;
else if(wood_type.equals("oak"));
wood_typeCharge=15;
else if(basis_letter = 8);
chr_charge=letter_Charge*2;
else
add_charge=color_charge+wood_typeCharge+chr_charge;

// This is the work done in the endOfJob() method
// Output Charge for this sign.
System.out.println("The charge for this sign is $" + charge);
System.exit(0);
}
}

Answer 1

if (color_char.equals("gold"));
这后面的分号去掉。
else if 后面的分号也要去掉。

另外，add_charge，chr_charge没有初始化就调用了。

最后，else if(basis_letter = 8)请改为else if(basis_letter == 8)

希望对你有帮助。

追问

谢谢你！add_charge，chr_charge该如何修改初始化它们，还是这两个根本就是多余的。我实在是糊涂了，想不明白！

追答

你的程序中有这么两句：
double letter_Charge=3;
double add_charge;
其中，第一句声明了变量letter_Charge，并初始为它的值为3.
而第二句只声明了变量add_charge，并没初始化，也就是add_charge还没有值。
因为你的程序中有下面两句：
charge= min_charge + add_charge;

add_charge=color_charge+wood_typeCharge+chr_charge;

两句中，分别用到了add_charge和chr_charge，故add_charge和chr_charge不是多余的。

呵呵，这么说，你应该知道如何初始化了吧。

Answer 2

多了个分号，兄弟：
if (color_char.equals("gold"));

Answer 3

楼上正解