Controlling the printing of trailing zeros and decimal points in floating-point values, showpoint() - C++ File Stream

Description

Controlling the printing of trailing zeros and decimal points in floating-point values, showpoint()

Demo Code

#include <iostream>

int main(int argc, const char *argv[]) {
    // display double values with default stream format
    std::cout << "Before using showpoint" << std::endl
              << "9.99000 prints as: " << 9.9900 << std::endl
              << "9.90000 prints as: " << 9.9000 << std::endl
              << "9.00000 prints as: " << 9.0000 << std::endl;

    // display double value after showpoint
    std::cout << std::showpoint << "After using showpoint" << std::endl
              << "9.99000 prints as: " << 9.9900 << std::endl
              << "9.90000 prints as: " << 9.9000 << std::endl
              << "9.00000 prints as: " << 9.0000 << std::endl;

    return 0;/* w  ww .  j av  a  2 s.co m*/
}

Result

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