c-resources/CPlusPlus20ForProgrammers-m.../examples/ch19/fig19_23.cpp

31 lines
1.4 KiB
C++

// fig19_23.cpp
// C++20 text-formatting field width and precision placeholders.
#include <format>
#include <iostream>
int main() {
std::cout << "Demonstrating field width and precision placeholders:\n";
double value{123.456};
int width{8};
for (int precision{0}; precision < 5; ++precision) {
std::cout << std::format("{:{}.{}f}\n", value, width, precision);
}
}
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