Modify the calculator program from Chapter 7 to make the input stream an explicit parameter (as shown
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Modify the calculator program from Chapter 7 to make the input stream an explicit parameter (as shown in §8.5.8), rather than simply using cin. Also give the Token_stream constructor (§7.8.2) an istream& parameter so that when we figure out how to make our own istreams (e.g., attached to files), we can use the calculator for those. Hint: Don’t try to copy an istream.
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So the question became, how do I keep tutoring and help more people, a.k.a., clone myself. I got my answer teaching a team in Bangalore, India about pension plans. I built Excel spreadsheets with formulas. But, I added one twist…next to the number cells, I added comments with step-by-step math to explain actuarial formulas and life expectancies.
The team in Bangalore loved it, it cut their learning curve down significantly. So the lightbulb went on…why can’t I build a program/website to tutor in math. Essentially, can’t I put my brain on a website. This way, people can use the calculators without me having to be there.
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