c-resources/CPlusPlus20ForProgrammers-m.../examples/ch06/fig06_06.cpp

49 lines
1.8 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 << i * 100 << " " << (i * 100) + 9 << "\n";
}
else {
std::cout << 100 << "\n";
}
++i;
// print bar of asterisks
for (int stars{0}; stars < frequency; ++stars) {
std::cout << '*';
}
std::cout << '\n'; // start a new line of output
}
}
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