{"choices":[{"finish_reason":"stop","index":0,"logprobs":null,"message":{"annotations":null,"audio":null,"content":"**Short answer:**  \nThe “Hello, World!” program first appeared in a 1972 tutorial for the B programming language written by Brian Kernighan. It was later cemented as the canonical first example in the 1978 book *The C Programming Language* (the “K&R” book) and has been copied into virtually every programming language since.\n\n---\n\n### How it happened\n\n| Year | Event | Why it mattered |\n|------|-------|-----------------|\n| **1972** | Brian Kernighan publishes *“A Tutorial Introduction to the Language B”* (a memo for the Bell Labs Computing Science Research Center). The sample program is: <br>`main() { printf(\"hello, world\\n\"); }` | It was the first widely‑circulated piece of code that simply printed the phrase “hello, world”. It served as a sanity‑check for a new language and a gentle introduction for newcomers. |\n| **1978** | *The C Programming Language* (2nd ed., 1988) by Kernighan & Ritchie includes the same example as the first program in Chapter 1. | The book became the de‑facto textbook for learning C (and, by extension, many other languages). The example was copied verbatim in countless tutorials, textbooks, and manuals. |\n| **1980s‑1990s** | The phrase spreads to other languages (Pascal, BASIC, Lisp, Java, Python, etc.) as the “Hello, World!” program. | It turned into a cultural rite‑of‑passage: the simplest way to prove that a compiler, interpreter, or development environment actually works. |\n| **2000s‑present** | “Hello, World!” appears in jokes, memes, conference talks, and even non‑programming contexts (e.g., IoT devices, hardware demos). | The phrase is now synonymous with “the first step” or “a minimal working example” across tech culture. |\n\n---\n\n### Why “Hello, World?” specifically?\n\n1. **Readability** – It’s a short, friendly English greeting that anyone can understand, regardless of language proficiency.\n2. **Safety** – Printing a constant string avoids dealing with input, file I/O, or other side‑effects that could obscure whether the language toolchain is working.\n3. **Tradition** – Once the example appeared in the K&R book, it became a self‑reinforcing convention; new tutorials copied it, and the cycle continued.\n\n---\n\n### Earlier (pre‑1972) uses?\n\n- The exact phrase **“Hello, World!”** does not appear in any known computer literature before 1972.  \n- Similar “test” programs existed (e.g., early IBM mainframe demos printed “HELLO” or “TEST”), but they were not standardized or widely disseminated.  \n- The combination of a greeting and the word *World* seems to have been invented by Kernighan for the B tutorial.\n\n---\n\n### In a nutshell\n\n- **Origin:** Brian Kernighan’s 1972 B‑language tutorial.  \n- **Popularization:** The 1978 (and later) *The C Programming Language* book.  \n- **Result:** “Hello, World!” became the universal first program for learning a new programming language and a cultural meme in computing.","function_call":null,"reasoning":"The user asks: \"What is the origin of the phrase Hello, World?\" Provide concise answer, likely about programming tradition, first used in Brian Kernighan's 1972 tutorial for the B language, later popularized in \"The C Programming Language\" book (K&R) in 1978. Also earlier uses possibly in other contexts like 1960s? Provide details: origin in the 1972 tutorial \"A Tutorial Introduction to the Language B\" by Kernighan, example program prints \"hello, world\". It became standard for beginners. Also earlier use in 1960s mainframe? There's a mention of \"Hello, World!\" in 1959? The phrase may have earlier uses in literature. But primary origin is programming.\n\nThus answer: The phrase originated as a simple test program in early computer languages, first appearing in a 1972 tutorial by Kernighan, then in K&R C book, and popularized thereafter. Provide context.","reasoning_content":"The user asks: \"What is the origin of the phrase Hello, World?\" Provide concise answer, likely about programming tradition, first used in Brian Kernighan's 1972 tutorial for the B language, later popularized in \"The C Programming Language\" book (K&R) in 1978. Also earlier uses possibly in other contexts like 1960s? Provide details: origin in the 1972 tutorial \"A Tutorial Introduction to the Language B\" by Kernighan, example program prints \"hello, world\". It became standard for beginners. Also earlier use in 1960s mainframe? There's a mention of \"Hello, World!\" in 1959? The phrase may have earlier uses in literature. But primary origin is programming.\n\nThus answer: The phrase originated as a simple test program in early computer languages, first appearing in a 1972 tutorial by Kernighan, then in K&R C book, and popularized thereafter. Provide context.","refusal":null,"role":"assistant"},"routed_experts":null,"stop_reason":null,"token_ids":null}],"created":1787569830,"ec_transfer_params":null,"id":"chatcmpl-cd36d259-9b8b-47fd-b861-c38613173650","kv_transfer_params":null,"metrics":null,"model":"@cf/openai/gpt-oss-120b","object":"chat.completion","prompt_logprobs":null,"prompt_text":null,"prompt_token_ids":null,"service_tier":null,"usage":{"prompt_tokens":84,"completion_tokens":902,"total_tokens":986,"prompt_tokens_details":{"cached_tokens":0},"neurons":64.17269134521484}}