Functions that differ only in their return type cannot be overloaded

Issue

Note: Although question is duplicate, but current answers lacks details, so I wanted to post another one.

I'm using C++Builder developed by Embarcadero.

For Windows, it compiles fine.

For Android, it shows the following error:

Checking project dependencies...
Building Project3.cbproj (Debug, Android)
bccaarm command line for "Project3PCH1.h"
  c:\program files\embarcadero\studio\20.0\bin\bccaarm.exe -cc1 -D _DEBUG -output-dir .\Android\Debug -isysroot 
  C:\Microsoft\AndroidNDK\android-ndk-r15c\sysroot -idirafter =\usr\include -idirafter =\usr\include\arm-linux-androideabi -idirafter 
  C:\Microsoft\AndroidNDK\android-ndk-r15c\sources\cxx-stl\gnu-libstdc++\4.9\include -idirafter 
  C:\Microsoft\AndroidNDK\android-ndk-r15c\sources\cxx-stl\gnu-libstdc++\4.9\libs\armeabi-v7a\include -idirafter 
  C:\Microsoft\AndroidNDK\android-ndk-r15c\sources\android\native_app_glue -I C:\Users\gray\Documents\Embarcadero\Studio\Projects -I "c:\program 
  files\embarcadero\studio\20.0\include\android\fmx" -isystem "c:\program files\embarcadero\studio\20.0\include" -isystem "c:\program 
  files\embarcadero\studio\20.0\include\android\rtl" -isystem "c:\program files\embarcadero\studio\20.0\include\android\fmx" -isystem "c:\program 
  files\embarcadero\studio\20.0\include\android\crtl" -isystem C:\Users\Public\Documents\Embarcadero\Studio\20.0\hpp\Android 
  -debug-info-kind=standalone -fborland-extensions -fborland-auto-refcount -nobuiltininc -nostdsysteminc -triple thumbv7-none-linux-androideabi 
  -emit-pch -mconstructor-aliases -masm-verbose -target-abi aapcs-linux -target-cpu cortex-a8 -nostdinc++ -fdeprecated-macro -fexceptions 
  -fcxx-exceptions -munwind-tables -mstackrealign -fno-spell-checking -x c++ -std=c++11 -O0 -fmath-errno -tU -o .\Android\Debug\Project3PCH1.pch 
  Project3PCH1.h 
[bccaarm Error] string.h(664): functions that differ only in their return type cannot be overloaded
  string.h(50): previous declaration is here
[bccaarm Error] string.h(680): functions that differ only in their return type cannot be overloaded
  string.h(69): previous declaration is here
[bccaarm Error] string.h(697): functions that differ only in their return type cannot be overloaded
  string.h(89): previous declaration is here
[bccaarm Error] string.h(711): functions that differ only in their return type cannot be overloaded
  string.h(118): previous declaration is here
[bccaarm Error] string.h(729): functions that differ only in their return type cannot be overloaded
  string.h(155): previous declaration is here
Failed
Elapsed time: 00:00:18.3

Here is strings.h

Solution

my bet is that you need to use "Preprocessor directives" in your code and indicate platforms

How do I check OS with a preprocessor directive?

https://www.cplusplus.com/doc/tutorial/preprocessor/

Answered By - NaturalDemon