我想我的程序几乎可以运行了，但是，我似乎无法将总和输出为像“3.2”或“5.2”这样的数字。出于某种原因，它只返回 2.0 或 3.0 或 4.0 的值，就像以 .0 结尾的整数一样。有什么帮助吗？
import java.io.Console;
import java.util.Scanner;
/**
*
* @author binka
*/
public class Samelson_Lincoln_Lab6 {
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
// TODO code application logic here
Scanner in = new Scanner(System. in );
System.out.println("Please enter a number?");
int number = in .nextInt();
double[] array = new double[number];
System.out.println();
int sign = 0;
double term = 0;
for (int i = 1; i < array.length; i++) {
if (sign == 0) {
term = Math.abs((4.0 / ((2.0 * i) - 1.0)));
array[i] = term;
sign = 1;
} else if (sign == 1) {
term = ((4.0) / ((2.0 * i) - 1));
array[i] = -term;
sign = 0;
}
System.out.println(array[i]);
}
boolean choice = true;
while (choice = true) {
System.out.println("Would you like to see the sum?: (Y or N)");
String choicesum = in .next();
choicesum.toUpperCase();
if ("Y".equals(choicesum)) {
double sum = computeSum(array);
System.out.println("Your sum is: " + sum);
choice = false;
break;
} else if ("N".equals(choicesum)) {
System.out.println("See ya!");
choice = false;
break;
} else {
System.out.println("Not a correct response, try again!");
}
}
}
public static int computeSum(double[] array) {
double sum = 0;
for (int i = 0; i < array.length; i++) {
sum = sum + array[i];
}
return sum;
}
}