How can I convert my coded c++ codes to android app

Question

I want to convert my coded GPA calculator to Android app
https://code.sololearn.com/c56HGh68m35U/?ref=app
https://code.sololearn.com/cwGEQptuR64L/?ref=app
https://code.sololearn.com/crtYFBwkd1Jt/?ref=app
https://code.sololearn.com/cEt8GWZGdAeM/?ref=app
https://code.sololearn.com/cEt8GWZGdAeM/?ref=app

Answer 1

https://www.quora.com/How-can-I-convert-a-simple-C++-program-into-an-Android-or-an-Ios-app-1

https://stackoverflow.com/questions/5949557/convert-existing-c-h-and-cpp-files-to-java-for-android

Answer 2

I want to know too.