To create an app which programing language should i learn

Answer 1

You should use learn java for cross platform,use c# for windows platform,and use swift for ios platform
But i reccomended you should focus learning on one programming language don't forget to play quizzes and code

Answer 2

For mobile android apps you can use kotlin/java

For mobile iOS apps you can use swift

For desktop applications you can use C++ , C#,java,(objective C for mac) and many more

Answer 3

C# can be used for Android apps if you're using unity game engine