Java code question

[Skie]

I have an assignment where i have to read int's in from a txt file and put them into categories and then output them. Getting a lump of errors can anyone tell me what im doing wrong? Also i need to ignore the first number in the file, how would i do this? Am i going about entirely the wrong way?

import java.io.*;
import java.util.Scanner;

public class ClassGrades{

	public static void main (int[] args){
		int one = 0;
		int two = 0;
		int three = 0;
		int four = 0;
		int five = 0;
		int six = 0;
		int seven = 0;
		int eight = 0;
	
		File file = new File("grades.txt");
		try{
			Scanner scanner = new Scanner(file);
			while(scanner.nextInt()) {
				if(scanner.nextInt < 25) { one = one + 1};
				else if(scanner.nextInt() > 24 && < 50) { two = two + 1};
				else if(scanner.nextInt() > 49 && < 75) { three = three + 1};
				else if(scanner.nextInt() > 74 && < 100) { four = four + 1};
				else if(scanner.nextInt() > 99 && < 125) { five = five + 1};
				else if(scanner.nextInt() > 124 && < 150) { six = six + 1};
				else if(scanner.nextInt() > 149 && < 175) { seven = seven + 1};
				else { eight = eight + 1};
				System.out.println("[0 - 24]: "one"");
				System.out.println("[25 - 49]: "two"");
				System.out.println("[50 - 74]: "three"");
				System.out.println("[75 - 99]: "four"");
				System.out.println("[100 - 124]: "five"");
				System.out.println("[125 - 149]: "six"");
				System.out.println("[150 - 174]: "seven"");
				System.out.println("[175 - 199]: "eight"");
			}
			scanner.close();
		}
		catch(FileNotFoundException e) {}
	}
}

[Skie]

Actually doesn't matter tech just said we gotta do it in c++ >< been 3 years scene i've had c++

i found basics of opening/closing txt's in c++

#include <iostream>
#include <fstream>
#include <string>
using namespace std;

void main () {

	int one = 0;
	int two = 0;
	int three = 0;
	int four = 0;
	int five = 0;
	int six = 0;
	int seven = 0;
	int eight = 0;
	
    int INT;
	ifstream infile;
	infile.open ("grades.txt");
        while(!infile.eof) // To get you all the lines.
        {
	        getline(infile,INT); // Saves the line in STRING.
	        cout<<INT; // Prints our STRING.
        }
	infile.close();
	system ("pause");
}

No clue how to get them one by one though; i know i can just do a if else statement to put them like i was in the java code.

[quannum]

a lump of errors

pasting these would be helpful, when you decide to ask again in c++

[quannum]

working perl example

use POSIX qw(ceil floor);
my $g =();
if (open(my $fh, "grades.txt") ) {
   while ( <$fh> ) {
      my $key = ceil($_/25);	   
      $g->{$key}++;
   }
} else { die $!; }

foreach my $slot (keys %$g) {
   print "$slot: $g->{$slot}\n";
}

[Senoska]

Crappy, but easy to understand solution:
Add an arraylist/list for each of your categories.

Putting things into categories:

(Pseudo code)

If you want to get fancy, write a struct like this:

Struct grades{
              List<Int> under10;
              List<Int> under50;
              List<Int> under100;
              List<Int> perfect;
}

Write a function like this:

private void lolCoding(int a){
              if      ((a >= 1) && (a <= 9)) grades.under10.Add(a);
              else if ((a >= 10) && (a <= 49)) grades.under50.Add(a);
              else if (a >= 50 && (a <= 99)) grades.under100.Add(a);
              else grades.perfect.Add(a);
}

This will give you everything in an organized fashion. If you just want to output the values, just get rid of the Struct and make the function output your stuff.