我是Java的新手,同时也是while、for和if/else语句的新手。我一直在苦苦挣扎这个难题。
以下是代码和说明。它可以编译,但它没有按照预期计算。我不确定它是数学逻辑错误、循环布局错误还是两者兼而有之。
我已经努力了很长时间,但仍然看不到答案。我觉得我离答案很近......但还是很遥远。
代码:
/*
This program uses a while loop to to request two numbers and output (inclusively) the odd numbers between them,
the sum of the even numbers between them, the numbers and their squares between 1 & 10, the sum of the squares
of odd numbers.
*/
import java.io.*;
import java.util.*;
public class SumOfaSquare
{
static Scanner console = new Scanner(System.in);
public static void main (String[] args)
{
int firstnum = 0, secondnum = 0, tempnum = 0;
int sum = 0,squaresum = 0, squarenum = 0;
int number = 1;
String oddOutputMessage = "The odd numbers between" + firstnum + " and " + secondnum + " inclusively are:";
String evenSumMessage = "The sum of all even numbers between " + firstnum + " and " + secondnum + "is: ";
String oddSquareMessage = "The odd numbers and their squares are : ";
String squareMessage = "The numbers and their squares from 1-10 are : ";
System.out.println ("Please enter 2 integers. The first number should be greater than the second: ");
firstnum = console.nextInt();
secondnum = console.nextInt();
//used to find out if first number is greater than the second. If not, inform user of error.
if (firstnum > secondnum)
{
tempnum = firstnum;
System.out.println ("You entered: " + firstnum + " and: " + secondnum);
}
else
System.out.println ("Your first number was not greater than your second number. Please try again.");
//while the frist number is greater, do this....
while (tempnum <= secondnum)
{
//if it's odd....
if (tempnum %2 == 1)
{
oddOutputMessage = (oddOutputMessage + tempnum + " ");
squaresum = (squaresum + tempnum * tempnum);
}
//otherwise it's even..
else
{
sum = sum + tempnum;
evenSumMessage = (evenSumMessage + sum + " ");
tempnum++;
}
}
// figures squares from 1 - 10
while (number <=10)
{
squarenum = (squarenum + number * number);
squareMessage = (squareMessage + number + " " + squarenum);
number++;
}
oddSquareMessage = oddSquareMessage + squaresum;
System.out.println (oddOutputMessage);
System.out.println (oddOutputMessage);
System.out.println (squareMessage);
System.out.println (evenSumMessage);
System.out.println (oddSquareMessage);
}
}