user91887: How to understand script.cpp and its interpreter.I understand register and postfix operation.
I want to understand how script is parsed into machine code.Can i write hello world such as only pushing value into the stack.

user38618: 
I want to understand how script is parsed into machine code.

Unlike Ethereum, Script isn't compiled. It's interpreted, like Javascript. The opcodes are evaluated on-the-fly.

Can I write hello world such as only pushing value into the stack?

Maybe try entering
0x0c 0x48656c6c6f20776f726c6421

to https://matiu.github.io/opcodes-playground/? (0x0c is the length of the text, as a push operation)

91887: <p>How to understand script.cpp and its interpreter.I understand register and postfix operation.
I want to understand how script is parsed into machine code.Can i write hello world such as only pushing value into the stack.</p>
 38618: <blockquote>
  <p>I want to understand how script is parsed into machine code.</p>
</blockquote>

<p>Unlike Ethereum, Script isn't compiled. It's interpreted, like Javascript. The opcodes are evaluated on-the-fly.</p>

<blockquote>
  <p>Can I write hello world such as only pushing value into the stack?</p>
</blockquote>

<p>Maybe try entering</p>

<pre><code>0x0c 0x48656c6c6f20776f726c6421
</code></pre>

<p>to <a href="https://matiu.github.io/opcodes-playground/" rel="nofollow noreferrer">https://matiu.github.io/opcodes-playground/</a>? (<code>0x0c</code> is the length of the text, as a push operation)</p>
