Rounding float value to the nearest digit, tenth, hundredth, thousandth and ten-thousandth. - C++ File Stream

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Description

Rounding float value to the nearest digit, tenth, hundredth, thousandth and ten-thousandth.

Demo Code

#include <iomanip>
#include <iostream>

int main(int argc, const char *argv[]) {
    double d = 100.453627;

    std::cout << std::left << std::setw(8) << "10" << std::setw(12) << "100"
              << std::setw(12) << "1000" << std::setw(12) << "10000"
              << std::endl;/*from   www  .  j ava2 s . c  o m*/

    std::cout << std::setw(8) << std::fixed << std::setprecision(1) << d
              << std::setw(12) << std::fixed << std::setprecision(2) << d
              << std::setw(12) << std::fixed << std::setprecision(3) << d
              << std::setw(10) << std::fixed << std::setprecision(4) << d
              << std::endl;
    return 0;
}

Result


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