Can we program Arduino Microcontroller by using assmebly language

I have use only 89C51 microcontroller and program it by using uvsion keil, now I want to program Arduino controllers like Arduino atmega 2560 , Arduino UNO , etc. so is this possible ? If it is so...
How to use C language to control the microcontroller

Usually we get the book that teach us using assemble language to program microcontroller. How can I get the information about using C language to controll it? Thanks
How to use C language to control the microcontroller

Usually we get the book that teach us using assemble language to program microcontroller. How can I get the information about using C language to controll it? Thanks
Can we program Arduino Microcontroller by using assmebly language

I have use only 89C51 microcontroller and program it by using uvsion keil, now I want to program Arduino controllers like Arduino atmega 2560 , Arduino UNO , etc. so is this possible ? If it is so...
convert hex file into c language or assembly language

Respected Sir, I would like to know how we can convert hex file into c language back. and by which software can be done. thanks