2˘:

#!/usr/bin/env perl

use strict;
use warnings;
use feature qw(say);
use Math::Round;

say 8.95 * 100;

printf("%.15f\n", 8.95 * 100);

printf("%f\n", 8.95 * 100);

printf("%d\n", 8.95 * 100);

printf("%d\n", round(8.95 * 100));

say int(8.95 * 100);

say int(round(8.95 * 100));

__END__
[download]

karl@rantanplan:~/src/cpp/acme$ ./meditation.pl
895
894.999999999999886
895.000000
894
895
894
895
[download]

#include <iomanip>
#include <iostream>
#include <cmath>
using std::cout;
using std::round;

int main() {
  double a = 8.95;
  double b = 100;
  double r = a * b;
  cout.precision(18);
  cout << r << " - precision 18\n";
  cout << int(r) << " - int \n";
  cout << round(r) << " - round\n";
  cout.precision(6);
  cout << r << " - precision 6\n";
  cout << "Supernatural!\n";
  return 1;
}
[download]

karl@rantanplan:~/src/cpp/acme$ clang++-18 -std=c++23 meditation.cpp -
+o meditation       
karl@rantanplan:~/src/cpp/acme$ ./meditation
894.999999999999886 - precision 18
894 - int
895 - round
895 - precision 6
Supernatural!
[download]

perlnumber

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