英文:
I'm coding part of an RPG game and there's an error saying "incompatible types: char cannot be converted into boolean" (java, bluej)
问题
public class test {public static void main(String args[]) {new test();}public test() {System.out.println("You take the notebook with you and walk to the nearest");System.out.print("comic book store where you see a young girl being robbed by a");System.out.print("group of men. The man who appears to be the leader of the gang speaks.");System.out.print("\"My name is Takuo, Shibui-Maru, that’s Shibutaku for short. Heh heh.\"");System.out.print("You decide to write his name and see what happens.");System.out.print("Do you choose to kill him by:");int points = 50;System.out.println(" ");char kill = IBIO.inputChar("a)heart attack or b)fire: ");if (kill == 'a') // here's the corrected comparison{points += 10;System.out.println(" Within minutes, the man falls to the ground and the girl runs away. The death note works! " + points);} else {points -= 20;System.out.println(" All of a sudden, flames engulf the comic book store.");System.out.println(" You attempt to leave the store as quickly as possible but have trouble seeing.");System.out.println(" You return safely with the notebook in your hands, but an innocent old man fails to come outside in time. " + points);}System.out.println("So it wasn't a myth!");}}
英文:
I'm pretty new to this coding stuff and I have an assignment due soon, where we have to code an RPG game. I'm working on a chunk of my Death-Note based game where Kira is choosing what way to kill using If statements. For some reason it says "incompatible types: char cannot be converted into boolean" and I have no clue why.
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public class test{public static void main (String args[]){new test();}public test (){System.out.println ("You take the notebook with you and walk to the nearest");System.out.print (" comic book store where you see a young girl being robbed by a");System.out.print (" group of men. The man who appears to be the leader of the gang speaks.");System.out.print (" \"My name is Takuo, Shibui-Maru, that’s Shibutaku for short. Heh heh.\"");System.out.print ("You decide to write his name and see what happens.");System.out.print ("Do you choose to kill him by:");int points = 50;System.out.println (" ");char kill = IBIO.inputChar ("a)heart attack or b)fire: ");if (kill = 'a') //heres the error{points = +10;System.out.println (" Within minutes, the man falls to the ground and the girl runs away. The death note works! +points+ ");}else{points = -20;System.out.println (" All of a sudden, flames engulf the comic book store.");System.out.println (" You attempt to leave the store as quickly as possible but have trouble seeing.");System.out.println (" You return safely with the notebook in your hands, but an innocent old man fails to come outside in time. +points");}System.out.println ("So it wasen't a myth!");}}
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答案1
得分: 3
因为您在您的 if 语句中使用了单个等号，所以出现了这个问题。单个等号用于赋值，您应该使用双等号运算符 (==) 来比较两个值。编译器提示您的 if 语句期望一个 boolean 值（或者一个求值结果为 boolean 的表达式），但您传递的是一个赋值而不是一个比较。
请尝试使用以下代码替代：
if (kill == 'a') {// ...}
英文:
This happens because you're using a single equal sign in your if. This is used for assignment, you're looking for the double equal operator (==) which compares two values.
The compiler is telling you that the if is expecting a boolean (or an expression which resolves to a boolean) but you're passing in an assignment instead of a comparison.
Try this instead:
if (kill == 'a') {// ...}
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