Gas Pump

Question

Please help me i need to finish this. my problem is in the error description.i need to calculate the price to liters when i click the button total.

output is:
price: 500
liters: 11.693... (500 / 42.76) i need to change the *= to /=. anyone know this?

Murugesh P · Answer

Try this price = Convert.ToDouble(tcxtprice.Text); //You have to assign the text box value first price /= diesel;

Murugesh P · Answer

You are Welcome :)

Andariel Sharp · Answer

Thank you Murugesh P! now i got my code running.. thanks for the support it really helps!

Murugesh P · Answer

Paste your code in the reply, i will correct and post it again.(No screen shots please)

Andariel Sharp · Answer

can you give me your exact code? because i replace the diesel /= price; txtLiters.Text = Convert.ToString(price); to price = Convert.ToDouble(txtLiters.Text); price =/ diesel; there still an error.

Andariel Sharp · Answer

still doesnt work for price /= diesel; still 0 for liter.

Andariel Sharp · Answer

Look it has the same output. diesel *= price; or price *= diesel; still the same i get 0 in Liter box.

Murugesh P · Answer

Hey , I got it just change the last piece of code diesel/ = price to price /= diesel; It will work. Ignore the previous suggestions. ---------------------------------------------------------------------------------------------------------------------Mark it as answer if it helps you.

Murugesh P · Answer

Ya its zero because of your input. You are dividing 42.76 by 1000 and the quotient is zero. So no problem with the code.

Murugesh P · Answer

From your code i guess you want to calculate the Total price based on diesel amount. In that case you should multiply. it will be price *= diesel;

Andariel Sharp · Answer

take a look of this. :(

Murugesh P · Answer

Can you post your latest code after the changes?

Andariel Sharp · Answer

it is running but the output in liters is always 0. it seems "diesel /= price;" is not the right operand to get the total. when i type the price for example 1000. the liter is always 0.

Murugesh P · Answer

Hi, You could assign some default value for variable "price" while declaring. EX:double price = 0.00;

Andariel Sharp · Answer

thank you for your reply Murugesh. now i have this error saying "Use of unassigned local variable price" in if (radDiesel.Checked) diesel /= price; //<--- here is the error price. txtPrice.Text = Convert.ToString(price);

Murugesh P · Answer

Hi Andariel Sharp , 1.Remove const Key word before double diesel(If you declare something as constant you cannot change it, thats what the first error is about. it is Expecting a variable) 2 .txtprPrice.text = Convert.ToString(Price); try this to avoid second error(tctPrice.text expects a string value whereas price is not a string, so just convert it).