Answer 1

C++ IDE for android :- cppDroid :- https://play.google.com/store/apps/details?id=name.antonsmirnov.android.cppdroid
There are also other apps but this one is free to use.
best c++ IDE for PC :- Visual Studio or you can also use netBeans :- https://netbeans.org/features/cpp/index.html

Answer 2

Just click on the download button on the upper right corner on the given link. or just go here
https://netbeans.org/downloads/index.html

Answer 3

The United States has imposed restrictions on activities with Iran under various legal authorities since 1979, following the seizure of the U.S. Embassy in Tehran. For more information, please see http://www.state.gov/e/eb/tfs/spi/iran/index.htm
This is a copied response from the Visual Studio team, so netBeans might have same issues.
So probably you can't use these softwares in Iran

Answer 4

c++ ide for pc :
codeblocks

Answer 5

@Luka but that will be pirating the software. I was trying to keep that away.