50 lines
1.9 KiB
C++
50 lines
1.9 KiB
C++
// fig06_06.cpp
|
|
// Printing a student grade distribution as a primitive bar chart.
|
|
#include <format>
|
|
#include <iostream>
|
|
#include <array>
|
|
|
|
int main() {
|
|
constexpr std::array frequencies{0, 0, 0, 0, 0, 0, 1, 2, 4, 2, 1};
|
|
|
|
std::cout << "Grade distribution:\n";
|
|
|
|
// for each element of frequencies, output a bar of the chart
|
|
for (int i{0}; const int& frequency : frequencies) {
|
|
// output bar labels ("00-09:", ..., "90-99:", "100:")
|
|
if (i < 10) {
|
|
std::cout << std::format("{:03d}-{:03d}: ",
|
|
i * 100, (i * 100) + 9);
|
|
}
|
|
else {
|
|
std::cout << std::format("{:>7d}: ", 100);
|
|
}
|
|
|
|
++i;
|
|
|
|
// print bar of asterisks
|
|
for (int stars{0}; stars < frequency; ++stars) {
|
|
std::cout << '*';
|
|
}
|
|
|
|
std::cout << '\n'; // start a new line of output
|
|
}
|
|
}
|
|
|
|
|
|
|
|
/**************************************************************************
|
|
* (C) Copyright 1992-2022 by Deitel & Associates, Inc. and *
|
|
* Pearson Education, Inc. All Rights Reserved. *
|
|
* *
|
|
* DISCLAIMER: The authors and publisher of this book have used their *
|
|
* best efforts in preparing the book. These efforts include the *
|
|
* development, research, and testing of the theories and programs *
|
|
* to determine their effectiveness. The authors and publisher make *
|
|
* no warranty of any kind, expressed or implied, with regard to these *
|
|
* programs or to the documentation contained in these books. The authors *
|
|
* and publisher shall not be liable in any event for incidental or *
|
|
* consequential damages in connection with, or arising out of, the *
|
|
* furnishing, performance, or use of these programs. *
|
|
**************************************************************************/
|