Gaming Need help with Java coursework

[R2DJ]

The program should allow the tutor to enter in the various marks which the students have been awarded, until the tutor enters in a mark exceeding 100. At this point the program should display a histogram. Each star represents a student who achieved a module mark in the range shown.

0 - 29ÂÂ ***ÂÂÂÂÂÂÂÂÂÂÂÂÂÂ(3 students received a mark between 0-29)
30-39ÂÂÂÂ*****
40-69ÂÂÂÂ********
70-100ÂÂ ****

20 students in total

What I have to do is to make a program in Java following the instructions mentioned above. Whenever I add a grade, a star must be added to the corresponding group. The same 4 categories will be used.

I know what to do mostly in this (use while loops, if-else statements, printing a star for each category) but I am stuck with how to display the histogram at the end (when the user enters 100+, the program stops and then the result histogram is shown. Finally, I have to make sure the histogram looks as neat as the one above.

Thanks.

 

[xakota]

Do you mean you're stuck on the logic to make the histogram display or you're stuck on the code to make the Histogram look like that?

 

[R2DJ]

Do you mean you're stuck on the logic to make the histogram display or you're stuck on the code to make the Histogram look like that?

Well, both really. I missed the tutorial on how to do the sample triangle pyramid of the same sort (and the lecturer doesn't upload the files to the online site)

 

[xakota]

Okay, well to make it appear you're probably going to want an if statement, like(pseudo code)
if(input variable > 100)
{print histogram}
else if(input variable =70)
variable for score is between 70 100 ++
[continue with the else if branch]

To make it look like it does you're probably going to want something like this(this is just for the first line of the histogram)
final String UBERFAIL = "0-29"; //put a few spaces after '29', for some reason gbatemp won't let me put them there
System.out.println(UBERFAIL);
for(int cnt = 0; cnt < x; cnt++) //where "x" is whatever variable you use to count how many people scored between 0 and 29
System.out.print("*"); //note that this is print and not println

 

[tj_cool]

Should be something like

CODEpublic static void main(String[] args) {
ÂÂÂÂScanner scanner = new Scanner(System.in);
ÂÂÂÂint input;
ÂÂÂÂint lowest = 0;
ÂÂÂÂint low = 0;
ÂÂÂÂint medium = 0;
ÂÂÂÂint high = 0;
ÂÂÂÂdo {
ÂÂÂÂÂÂÂÂSystem.out.print("Enter a score: ");
ÂÂÂÂÂÂÂÂinput = scanner.nextInt();
ÂÂÂÂÂÂÂÂif (input < 0) {
ÂÂÂÂÂÂÂÂÂÂÂÂSystem.out.println("Score can't be negative");
ÂÂÂÂÂÂÂÂ} else if (input < 30) {
ÂÂÂÂÂÂÂÂÂÂÂÂlowest++;
ÂÂÂÂÂÂÂÂ} else if (input < 40) {
ÂÂÂÂÂÂÂÂÂÂÂÂlow++;
ÂÂÂÂÂÂÂÂ} else if (input < 70) {
ÂÂÂÂÂÂÂÂÂÂÂÂmedium++;
ÂÂÂÂÂÂÂÂ} else if (input

 

[R2DJ]

Thanks xakota and tj_cool, should try it later and give an update when Netbeans decides to be stable.

 

[xakota]

Ha, I wanted to just post the whole thing but I thought it would be better for you if I just posted snippets but yeah, if you want you can just copypasta tj_cool's and it'll work perfectly.

 

[tj_cool]

Ha, I wanted to just post the whole thing but I thought it would be better for you if I just posted snippets but yeah, if you want you can just copypasta tj_cool's and it'll work perfectly.

Yeah, that might actually have been better

*Quickly removes solution*

 

[xakota]

XD, i almost did the exact same thing but then I thought if i had someone writing my code for me there's no way i would learn anything.

 

[R2DJ]

LOL I didn't really need the whole thing but I appreciate it. Almost all of the code is similar to what I've already done. It also helped since I just moved houses and everything's everywhere right now (and I had to move on the final week of uni a.k.a coursework and exam hell)

Oh, and I can't get to load because the scanner line returns an error (red line)? It's something I haven't covered in my Java lectures.

 

[tj_cool]

You need to import it.

import java.util.Scanner;

Put that above the class header.

Yeah, my compiler adds that automatically when I type

 

[Y05h1]

LOL I didn't really need the whole thing but I appreciate it. Almost all of the code is similar to what I've already done. It also helped since I just moved houses and everything's everywhere right now (and I had to move on the final week of uni a.k.a coursework and exam hell)

Oh, and I can't get to load because the scanner line returns an error (red line)? It's something I haven't covered in my Java lectures.

You need to import the Scanner class first.

CODEimport java.util.Scanner;

EDIT: Nevermind, tj_cool beat me to it

 

[R2DJ]

Ah OK. I haven't really toured around Netbeans that much (thanks to its bugginess). Huge thanks! One coursework done!

One last thing: do you guys know how to reference this as part of a source? I don't know how to Harvard reference info from a forum. Thanks

 

[shamiko_]

Ah OK. I haven't really toured around Netbeans that much (thanks to its bugginess). Huge thanks! One coursework done!

One last thing: do you guys know how to reference this as part of a source? I don't know how to Harvard reference info from a forum. Thanks

you put the url of the post that you want.
if you want tj_cools' post then you click the post number. a pop-up apears. copy and paste the address

you get this
CODEhttp://gbatemp.net/t269423-need-help-with-java-coursework?view=findpost&p=3324838