A beginner level Calculator application.
. (decimal point) and <-- (Backspace) do not work. There is a limit on the number of digits of the operand you can enter. Exceeding the same might stop the calculator and you would have to restart it.
You are only required to check out the code of MainActivity.java (app/src/main/java/com/example/geenu/calculator) and activity_main.xml (app/src/main/res/layout) files.