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how to do this program?

Your first shot isn't using the phrase "amount tendered" properly.  That is the $30 your original post said you give the clerk.  You'd get change (or owe more) based on the gallons purchased multipied by the price minus the discount.  Your discount is only applied to the first fifteen gallons, so you need to figure if the purchase is for more or less and subtract accordingly. 

Jim
You're entirely bonkers. But I'll tell you a secret. All the best people are. ~ Alice
For he does not know what will happen; So who can tell him when it will occur? Eccl. 8:7

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Message 11 of 25
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Besides the basic arithmetic, you need a comparison to see if the purchase was 15 gallons or less. Based on the true/false result, you could use a case statement.
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Message 12 of 25
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thats what i was thinking of using, is a True False case statement.  Though i honestly dont know how to do the True False case structure.

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Message 13 of 25
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Also what would be the two cases and how would i conect them in order to show the discount amount and the final price indicators.

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Message 14 of 25
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Here's a hint on how to calculate the discount without a Case structure.  Make sure you understand how it works.

 

Untitled 2 Block Diagram _2014-09-06_19-31-21.png

Jim
You're entirely bonkers. But I'll tell you a secret. All the best people are. ~ Alice
For he does not know what will happen; So who can tell him when it will occur? Eccl. 8:7

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Message 15 of 25
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thanks that helps alot.

 

Now for the questions about the various symbols, what are they and where can i find them?

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Message 16 of 25
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@nyc_(is_out_of_here) wrote:

   [...]

  

   That is math I could have done in high school. [...]

You have learnt nothing in class?  Skipping class?


This seemed slightly harsh when I first read it, but you're not showing much to endear yourself to the collective.  Here are a few resources you should use:

 

LabVIEW Basics

LabVIEW 101

Jim
You're entirely bonkers. But I'll tell you a secret. All the best people are. ~ Alice
For he does not know what will happen; So who can tell him when it will occur? Eccl. 8:7

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Message 17 of 25
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Thanks for all the help guys.

 

I know it looks like im not trying here so im sorry for that.

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Message 18 of 25
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I expect that you recognize the "less than or equal to" symbol, the one next to it is "Select".  They're both on the Comparison pallet.  The multiply is on the Numeric pallet.

 

How have the tutorials helped?

Jim
You're entirely bonkers. But I'll tell you a secret. All the best people are. ~ Alice
For he does not know what will happen; So who can tell him when it will occur? Eccl. 8:7

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Message 19 of 25
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I figured out where the symbols are and such. 

 

Now i just need to figure out where to place the price per gallon.

 

Below is what ive got so far.  I placed the amount tendered to subtract from the final price to get he discount price.

 

Untitled.png

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Message 20 of 25
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