Check out example codes for "is c and c++ platform independent". It will help you in understanding the concepts better.

Code Example 1

In C, C++ the compiled code (compiler given code) is machine 
language code which is understandable only by the cureent 
operating system. 
Hence this compiled code can not be executed in another 
Due to this reason these languages are considered as platform 
dependent programming languages.

Learn ReactJs, React Native from