私が書いているプログラムは、1年がうるう年であるかどうかを判断することです。これは課題なので、プログラム内で書いた4つのメソッドを使用する必要があります。プログラムはコンパイルして実行し、適切な場所でユーザー入力を要求しますが、プログラムへの入力は受け取りません。また、年はうるう年であり、何を入力してもループしていると言っています。このプログラムは私たちが与えられた例と一致しているように見えるので、私はエラーがどこにあるかについて非常に混乱しています。
import java.util.Scanner;
public class LeapYear {
public static void main(String[] args) {
boolean repeat;
String computeanother, yes="yes";
Scanner kb=new Scanner(System.in);
int year = -1;
boolean leap;
do
{
displayInstructions();
getYear(year);
leap = isLeap(year);
displayResults(year, leap);
System.out.println("Would you like to compute another year?");
computeanother = kb.nextLine();
if(computeanother.equals(yes))
repeat=true;
else
repeat=false;
} while(repeat=true);
}
public static void displayInstructions()
{
System.out.println("This program is designed to predict whether or not a year is a leap year.");
System.out.println("When prompted please enter a positive number for the year.");
System.out.println("Once the program has run completely, it will state the year and whether it is a leap year.");
}
public static void getYear(int year)
{
Scanner kb = new Scanner(System.in);
do {
System.out.println("Please enter the year.");
year=kb.nextInt();
} while (year < 0);
}
public static boolean isLeap(int year)
{
boolean leap;
if ((year%4==0 && year%100 != 0) || year%400==0){
leap = true;
return true;
} else {
leap = false;
return false;
}
}
public static void displayResults(int year, boolean leap)
{
if (leap = true) {
System.out.println("The year " +year);
System.out.println("is a leap year.");
} else {
System.out.println("The year " +year);
System.out.println("is not a leap year.");
}
}
}
みんなの助けてくれてありがとう!編集されたコードは次のようになります。
import java.util.Scanner;
public class LeapYear{
public static void main(String[] args){
boolean repeat;
String computeanother, yes="yes";
Scanner kb=new Scanner(System.in);
int year = -1;
boolean leap;
do
{
displayInstructions();
getYear(year);
leap = isLeap(year);
displayResults(year, leap);
System.out.println("Would you like to compute another year?");
computeanother = kb.nextLine();
repeat = computeanother.equals(yes);
}while(repeat);
}
public static void displayInstructions()
{
System.out.println("This program is designed to predict whether or not a year is a leap year.");
System.out.println("When prompted please enter a positive number for the year.");
System.out.println("Once the program has run completely, it will state the year and whether it is a leap year.");
}
public static int getYear(int year)
{
Scanner kb = new Scanner(System.in);
do{
System.out.println("Please enter the year.");
year=kb.nextInt();
}while (year < 0);
return year;
}
public static boolean isLeap(int year)
{
boolean leap;
year = getYear(year);
if ((year%4==0 && year%100 != 0) || year%400==0){
leap = true;
return true;}
else{
leap = false;
return false;}
}
public static int displayResults(int year, boolean leap)
{
year = getYear(year);
if (leap == true){
System.out.println("The year " +year);
System.out.println("is a leap year.");}
else{
System.out.println("The year " +year);
System.out.println("is not a leap year.");}
return year;
}
}