(这里的业余高手傻瓜Java编码器)。我一直在做这个项目,而且我遇到了一个我无法弄清楚的问题。 以下是我需要帮助的信息: (我正在尝试编写一个程序,以确定驾驶员是否超速,如果是的话,哪张是合适的,以及从帐户中扣除多少钱) 1.如何在if语句中使用reduc变量?当我将它包含在最后一条if语句中时,出现错误...如何将一个真正的布尔变成一个变量
//variables
int sbanka = 400;
int speed = 60;
int speedlimit = 60;
int ticket1 = 100;
//logic
//Ticket 1
if(speed > speedlimit + 10) {
System.out.println("You will recieve the level 1 ticket");
boolean reduc = true;
}
else {
System.out.println("Your speed was fine.");
}
//bank account calculation for ticket 1
if(reduc == true && sbanka >-100) {
sbanka -= 100;
System.out.println("we will deduct 100 dollars from your checking account");
这是完成的程序。谢谢您的帮助。
package labs;
public class SpeedingTicket {
public static void main(String[] args) {
//variables
int speed = 50;
int speedlimit = 60;
String text = ("Your account balance is now ");
boolean reduc = false;
//tickets
int t1 = 100;
int t2 = 150;
int t3 = 200;
//Bank account
int sbanka = (400);
//logic
if(speed > speedlimit + 10) {
System.out.println("You are getting a level one ticket");
reduc = true;
}
else {
System.out.println("Your speed was fine.");
reduc = false;
}
if(reduc == true) {
System.out.println(text + (sbanka - t1));
}
if(speed > speedlimit + 20) {
System.out.println("you are getting a level two ticket");
reduc = true;
}
else {
System.out.println("Your speed was fine.");
reduc = false;
}
if(reduc == true) {
System.out.println(text + (sbanka - t2));
}
if(speed > speedlimit + 30) {
System.out.println("This is a serious offence, you are getting a level 3 ticket");
reduc = true;
}
else {
System.out.println("Your speed was fine.");
reduc = false;
}
if(reduc == true) {
System.out.println(text + (sbanka - t3));
}
}
}
阅读的变量范围。如果您在错误陈述中发现错误并提出您的问题 –
您已经在'if {...}'范围内声明了变量,这意味着您不能在'if {...}块。将它的减速移动到if语句的上方并将其设置为默认值(我假设为false) – MadProgrammer