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Temperature conversion: Difference between revisions
Small changed in D entry
m (→{{header|J}}: typo in note) |
(Small changed in D entry) |
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=={{header|D}}==
<lang d>double kelvinToCelsius(in double k) pure nothrow @safe {▼
<lang d>import std.stdio, std.conv, std.string;▼
void main(string[] args) {▼
if (args.length == 2 && isNumeric(args[1])) {▼
immutable kelvin = to!double(args[1]);▼
if (kelvin >= 0) {▼
writefln("K %2.2f", kelvin);▼
writefln("C %2.2f", kelvinToCelsius(kelvin));▼
writefln("F %2.2f", kelvinToFahrenheit(kelvin));▼
writefln("R %2.2f", kelvinToRankine(kelvin));▼
} else writefln("%2.2f K is below absolute zero", kelvin);▼
}▼
}▼
▲double kelvinToCelsius(in double k) pure nothrow {
return k - 273.15;
}
double kelvinToFahrenheit(in double k) pure nothrow @safe {
return k * 1.8 - 459.67;
}
double kelvinToRankine(in double k) pure nothrow @safe {
return k * 1.8;
}
unittest {
import std.math: approxEqual;
assert(approxEqual(kelvinToCelsius(21.0), -252.15));
assert(approxEqual(kelvinToFahrenheit(21.0), -421.87));
assert(approxEqual(kelvinToRankine(21.0), 37.8));
▲}
▲void main(string[] args) {
▲ if (args.length == 2 && isNumeric(args[1])) {
▲ immutable kelvin = to!double(args[1]);
▲ if (kelvin >= 0) {
▲ writefln("K %2.2f", kelvin);
▲ writefln("C %2.2f", kelvinToCelsius(kelvin));
▲ writefln("F %2.2f", kelvinToFahrenheit(kelvin));
▲ writefln("R %2.2f", kelvinToRankine(kelvin));
} else
▲ }
}</lang>
{{out}}
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