Implementing a cost/per time code on an LCD (C programming)

Question

0.00/5 (No votes)

See more:

Hi,
I am trying to design a costing system, which measures the time somebody is in a park and than calculates the total cost say ($0.10 per minute). I am than trying to display this on an LCD screen. This is in C programming and am still trying to get my head around using timers. Any help would be appreciated

What I have tried:

I am okay at moving data onto the LCD screen. However, I do not know where to start when trying to take a measured time and multiply it.

Posted 5-Aug-16 20:46pm

Member 12672754

Updated 5-Aug-16 21:04pm

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Richard MacCutchan · Answer 1 · 2016-08-05T21:04:00

Solution 1

Capture the time at the start and end of the activity, and then calculate the difference:

C++

time_t timeStart = time();
// do the activities
time_t timeEnd = time();
long seconds = timeEnd - timeStart;