Built-in Functions¶

Q++ provides built-in functions without importing any module.

Output¶

Function	Signature	Description
`print`	`(args...) -> void`	Print to stdout (printf-style)
`write`	`(args...) -> void`	Print without newline
`writeln`	`() -> void`	Print newline only

Use string interpolation with print and write: print(\x = ${x}`);`

Input¶

Function	Signature	Description
`read`	`() -> i32`	Read integer from stdin (scanf)

Length¶

Function	Signature	Description
`len`	`(arr: [T; N]) -> usize`	Array length
`strlen`	`(s: str) -> usize`	String length

Abort¶

Function	Signature	Description
`panic`	`() -> void`	Abort program
`assert`	`(cond: bool) -> void`	Abort if condition is false
`assert`	`(cond: bool, msg: str) -> void`	Abort with custom message if condition is false

Example¶

craft main() -> void {
    print(42);
    writeln();
    make x: i32 = read();
    assert(x >= 0);
    assert(x < 100, "x must be less than 100");
    print(`You entered ${x}`);
    send;
}