Language Reference

$input System

Read user input interactively or via inline values and files.

Syntax Forms

Syntax	Description
`$input`	Read a value, auto-detect type
`$input as number`	Read and convert to number
`$input as string`	Read as string
`$input as list`	Read as list
`$input as bool`	Read as boolean
`$input("prompt")`	Show prompt, then read
`$input("prompt") as number`	Show prompt with typed input

Type keywords accepted

number, string, list, bool, int, float, text

Examples

pseudo

name = $input("Enter your name:")
age = $input("Enter age:") as number

print "Hello, {name}! You are {age} years old."

Output

? Enter your name: → Alice ? Enter age: → 25 Hello, Alice! You are 25 years old.

Auto Type Detection

When no type is specified, $input auto-detects:

Input received	Detected type
`"42"`	number → `42`
`"true"`	bool → `true`
`"hello"`	string → `"hello"`

Inline Input (-i flag)

Pass inputs without interactive prompts:

bash

# Single value
pseudo run greet.pseudo -i "Alice"

# Multiple values (\n separates them)
pseudo run greet.pseudo -i "Alice\n25\nengineer"

# From a file
pseudo run greet.pseudo -i inputs.txt

Each $input call consumes the next value in order.

inputs.txt example

inputs.txt

Alice
25
engineer

Repeatable -i

bash

pseudo run program.pseudo -i "Alice" -i "25" -i "engineer"

Input Exhaustion Error

If $input is called but no more inputs are available:

text

✗ Runtime Error: Expected input #4 but no more inputs available.
     Line 12: score = $input