Java Help - Basic 101 stuff...

This is my first trip down the path coding with Java.

I'm getting three errors in my code - and I'm cross-eyed from having spent four and a half hours looking for a stray semi-colon in my last program. First error I'm getting is "float cannot be dereferenced"

fMiles = new float[fNum][1];
for (i=0; i<Miles.length; i++)​

The next two are incompatible types. FMiles = fMiles;
FGallons = fGallons;

I've attached the code in a txt document. Any advice (because I'm a idiot over this) would be *GREATLY* appreciated.

Thanks.

 

It looks like you need to study array initialization...

float fMiles[][] = new float[10][1];

creates a 2-dimensional regular array of 10 entries, 1 entry each.

float fMiles[][] = new float[10][];

gives a two dimensional irregular array with the potential of a variable number of entries for each entry, so then you can say...

fMiles[0] = new float[5];
fMiles[1] = new float[7]..... etc.

To assign a variable from within an array, you would need a specific index..

float FMiles = fMiles[3][0]; ... assigns the first element of the fourth array to variable FMiles

Without studying your code too deeply, it looks like you need something like this:

float fMiles[][]; // uninitialized array, unknown size

fMiles[] = new float[Num]; // number of fill ups

fMiles[fNum][] = new float[1]; // space for one entry per fill up
fMiles[fNum][0] = someValue; // assign a value to the array entry

FMiles = fMiles[someIndex][0]; // as there is only one entry per index

I'm not quite sure what you are trying to achieve. Are you sure you need 2 dimensional arrays?