Einführung und erstes Programm

nim c -r hallo.nim            # übersetzen und sofort ausführen
nim c -d:release hallo.nim    # optimiert übersetzen
nim js hallo.nim              # nach JavaScript
nim check hallo.nim           # nur prüfen
nimble init projekt           # neues Projekt
nimble install <paket>        # Paket installieren
nimble test                   # Tests ausführen

echo "Hallo, Welt!"
echo "1 + 2 = ", 1 + 2
stdout.write "ohne Zeilenumbruch"
stdout.write "\n"
let name = "Mia"
echo "Hallo, ", name, "!"
echo "Länge: ", name.len

let a = 10            # unveränderlich zur Laufzeit
var b = 20            # veränderlich
const c = 30          # zur Übersetzungszeit bekannt
b += 5
echo a, " ", b, " ", c

var x: int = 5
var y: float = 2.5
var s: string = "Text"
var ok: bool = true
var z: char = 'z'
var klein: int8 = 127
var gross: int64 = 9_000_000_000
echo x, " ", y, " ", s, " ", ok, " ", z
echo klein, " ", gross
echo typeof(x), " ", typeof(y), " ", typeof(s), " ", typeof(ok)
echo high(int8), " ", low(int8), " ", high(int)
var u: uint8 = 255
u += 1
echo u

import std/[math, strutils]

echo 7 + 2, " ", 7 - 2, " ", 7 * 2
echo 7 div 2, " ", 7 mod 3, " ", 7 / 2
echo 2 ^ 10, " ", pow(2.0, 0.5)
echo sqrt(16.0), " ", abs(-5), " ", max(3, 9), " ", min(3, 9)
echo floor(2.7), " ", ceil(2.1), " ", round(3.5), " ", trunc(-2.7)
echo int(3.99), " ", float(3), " ", $42 & "!", " ", parseInt("17") + 1
echo 10 shl 2, " ", 255 shr 4, " ", 12 and 10, " ", 12 or 10, " ", 12 xor 10
echo 1_000 * 1_000
echo PI
echo (1 < 2) and (2 < 3), " ", not true
echo 0.1 + 0.2
echo (17 div 5, 17 mod 5)
echo gcd(48, 18), " ", lcm(4, 6)