Marie程序汇编报错：标签不能以0..9作为起始字符的问题排查

Hey there, let's break down exactly what's causing your assembly failure and how to fix it:

The Root Cause #

The error message spells it out clearly: MARIE's assembler doesn't allow labels to start with a digit (0-9). Looking at your code, the issue is the line near the end: 0, DEC 01. The label here is a single digit 0, which violates MARIE's label naming rules.

MARIE requires all labels to start with an alphabetic character (A-Z, case typically doesn't matter for most MARIE assemblers), and you can follow it with additional letters or digits if needed.

Corrected Code #

Here's your code with the problematic label fixed (I renamed 0 to ZERO to comply with the rules):

START, INPUT 
SKIPCOND 800 
HALT 
OUTPUT 
STORE A 
SUB Z 
SKIPCOND 800 
SKIPCOND 000 
JUMP START 
X, INPUT 
STORE B 
OUTPUT 
SUB A 
SKIPCOND 800 
JUMP Y 
JUMP X 
Y, LOAD B 
ADD C 
STORE S 
EVEN, SUB T 
SKIPCOND 800 
JUMP L 
JUMP EVEN 
L, SKIPCOND 400 
JNS ODD 
LOAD S 
OUTPUT 
LOAD A 
SUB S 
STORE N 
OUTPUT 
JUMP START 
ODD, OUTPUT S 
LOAD S 
ADD 0 
STORE S 
JUMPI ODD 
A, DEC 00 
B, DEC 00 
S, DEC 00 
N, DEC 04 
C, DEC 04 
Z, DEC 94 
T, DEC 02 
ZERO, DEC 01 
END START

Quick Reminder #

Going forward, double-check any new labels you add to make sure they start with a letter—this will keep you from running into the same error again.

内容的提问来源于stack exchange，提问作者TK708