visual studio：use of undeclared identifier“xxx类名”-CSDN博客
c++ - How to solve undeclared variable in the case below - Stack Overflow
include<string.h> or #include <cstring> but when use memset with error "use of undeclared identifier memset" · Issue #921 · MaskRay/ccls · GitHub
FAQ: Code Challenge: C++ Functions - Palindrome - C++ FAQ - Codecademy Forums
pset1 - I keep getting error: use of undeclared identifier 'n' when trying to compile mario.c. I am new to coding, my code is shown below - CS50 Stack Exchange
Solved HI COULD YOU PLEASE HELP ME TO FIX THIS ERROR | Chegg.com
cs50 lab2 scrabble what am i doing wrong? : r/cs50
Undeclared identifier xcode c++ - Stack Overflow
Compile error: use of undeclared identifier 'strcmp' · Issue #4107 · mapsme/omim · GitHub
Using FText to Substitute std::string breaks my code and gives me errors when compiling - Talk - GameDev.tv
c++ - vscode keeps telling me nullptr is undefined - Stack Overflow
Undeclared identifier- C++ - Stack Overflow
Solved By File By Type 0 unknown type name coORD 0 Unknown | Chegg.com
Solved How can I fix my code so this doesn't come up anymore | Chegg.com
error: use of undeclared identifier 'FormatIntWidthN' · Issue #3087 · google/googletest · GitHub
error C2065: 'string' : undeclared identifier-CSDN博客
The curious case of IID_InterfaceName undeclared identifier
C++ Identifier: Discover the Concepts of Identifiers in C++
Undeclared identifiers (Range-based for Loops) - C++ - Code with Mosh Forum
visual c++ - Impossible declare string type in C++ - Stack Overflow
Answered: Use of undeclared identifier 'SIZE' Use… | bartleby
c++ - gets() is causing compilation failure with ''use of undeclared identifier 'gets'" error - Stack Overflow
