Problem	add1
User	Lemon
Submission Time	2025-05-18 19:59:40
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

add1.cpp: In function ‘double parse_number()’:
add1.cpp:24:22: error: ‘parse_expr’ was not declared in this scope
24 | double val = parse_expr();
| ^~~~~~~~~~