41 lines
1.8 KiB
C++
41 lines
1.8 KiB
C++
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// fig04_12.cpp
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// Compound-interest example with C++20 text formatting.
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#include <iostream>
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#include <cmath> // for pow function
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#include "fmt/format.h" // in C++20, this will be #include <format>
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using namespace std;
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using namespace fmt; // not needed in C++20
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int main() {
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double principal{1000.00}; // initial amount before interest
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double rate{0.05}; // interest rate
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cout << format("Initial principal: {:>7.2f}\n", principal)
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<< format(" Interest rate: {:>7.2f}\n", rate);
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// display headers
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cout << format("\n{}{:>20}\n", "Year", "Amount on deposit");
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// calculate amount on deposit for each of ten years
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for (int year{1}; year <= 10; ++year) {
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double amount{principal * pow(1.0 + rate, year)};
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cout << format("{:>4d}{:>20.2f}\n", year, amount);
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}
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}
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/**************************************************************************
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* (C) Copyright 1992-2022 by Deitel & Associates, Inc. and *
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* Pearson Education, Inc. All Rights Reserved. *
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* *
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* DISCLAIMER: The authors and publisher of this book have used their *
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* best efforts in preparing the book. These efforts include the *
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* development, research, and testing of the theories and programs *
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* to determine their effectiveness. The authors and publisher make *
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* no warranty of any kind, expressed or implied, with regard to these *
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* programs or to the documentation contained in these books. The authors *
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* and publisher shall not be liable in any event for incidental or *
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* consequential damages in connection with, or arising out of, the *
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* furnishing, performance, or use of these programs. *
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**************************************************************************/
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