小编crv*_*h99的帖子

我只是想了解一些有关此事的信息.

float n = 2.99944323200023f

什么是f在文字的结尾吗？这叫什么？为什么用它？

在这个程序中,char g = (char)(br.read())每当我运行程序时都会跳过该行.进入年龄后,如果我输入性别为m,我收到错误java.lang.NumberFormatException.

import java.io.*;
public class Tax
{
    public static void main()throws IOException
    {
        InputStreamReader isr  = new InputStreamReader(System.in);
        BufferedReader br = new BufferedReader(isr);
        System.out.println("Enter age");
        int age = Integer.parseInt(br.readLine());
        System.out.println("Enter gender as m or f");
        char g = (char)(br.read());
        System.out.println("Enter Taxable Income");
        int ti = Integer.parseInt(br.readLine());
        double in;
        if (age > 65 || g == 'f')
        System.out.println("Wrong Category");
        else
        {
            if (ti <= 160000)
            in = 0;
            else if(ti > 160000 && ti<=500000)
            in = …