std/io

import "std/io" as io;

API

Function	Result
print(text: String)	Writes text without a newline
println(text: String)	Writes text followed by a newline
eprintln(text: String)	Writes text and a newline to standard error
printInt(value: Int)	Writes an integer
printFloat(value: Float)	Writes a Float
printFloat64(value: Float64)	Writes a Float64
printBool(value: Bool)	Writes a boolean
printChar(value: Char)	Writes a character
getln() String	Reads one line from standard input
printf(format: String, ...) Int	C-style formatted output
printfln(format: String, ...) Int	Formatted output followed by a newline

print, println, and eprintln are in the automatic prelude.

import "std/io" as io;

fun main() Int {
    io.print("Name: ");
    var name = io.getln();
    io.println("Hello, " + name);
    return 0;
}

The formatted functions follow the platform C runtime’s format rules. The compiler does not make a format string type-safe.