I64 vs F64

HolyC Easy · Lesson 1 · On the house

I64 vs F64

Integers and floats. Lesson 1 is free — on the house.

Lessons · HolyC Easy · Lesson 1 of 10 · On the house

I64 vs F64

Integers and floats.

Illustration for the HolyC course — Lesson 1 is on the house. The rest opens with the paper, the Daily, or a gift.

This is HolyC · easy, lesson 1: I64 vs F64. Read the teaching and the stills before the checks. The quizzes are open book and test the subject — HolyC itself — not product rules or layout trivia.

You already finished Introductory. I will not re-teach the absolute first hello. We build upward.

I64 is integer; F64 is floating-point.

Choose types for the data you mean.

Mixing carelessly loses precision or truncates.

Name variables after meaning.

types

I64 a = 3;
F64 b = 3.5;

Match this when you type. Open book.

Sit with that still. Trace it top to bottom. Name each piece. The exercise asks you to match its essence.

If something fails when you try it yourself, change one thing. Read the error. Return to the still. I will not rush you.

Quiz

What is F64?

A floating-point type
A file format
A font
A protocol

Quiz

What is I64?

A 64-bit integer type
A float only
A string
A class

Quiz

Why choose types deliberately?

Match the kind of quantity you store
Types are decorative only
HolyC forbids F64
I64 cannot hold 3

Quiz

Based on today's teaching, which claim is right?

Float.
The opposite of what the lesson said
The lesson forbade this topic
None of the subject material applies

Quiz

Based on today's teaching, which claim is right?

Integer.
The opposite of what the lesson said
The lesson forbade this topic
None of the subject material applies

Quiz

Based on today's teaching, which claim is right?

Intent.
The opposite of what the lesson said
The lesson forbade this topic
None of the subject material applies

Quiz

Based on today's teaching, which claim is right?

Float.
The opposite of what the lesson said
The lesson forbade this topic
None of the subject material applies

Quiz

Based on today's teaching, which claim is right?

Integer.
The opposite of what the lesson said
The lesson forbade this topic
None of the subject material applies

Quiz

Based on today's teaching, which claim is right?

Intent.
The opposite of what the lesson said
The lesson forbade this topic
None of the subject material applies

Quiz

Based on today's teaching, which claim is right?

Float.
The opposite of what the lesson said
The lesson forbade this topic
None of the subject material applies

Check

Match the still for: I64 vs F64.

That is the lesson. When every quiz and exercise on this page is green, mark it passed. Next lesson when you are ready.

Open-book: the answers are on this page. Pass every quiz and check (11) to mark the lesson done. This visit: 0/11.

I64 vs F64 · HolyC Easy (free) — The Gold Standard