Programming a real time clock

Using Arduino Programming Questions
#1

Hi everyone, I have a problem because I have to make a program that is running a real-time clock with DS1307 but I have to use the wire library and DS1307. I do not know how comprned I have been taken to start the program.
Can you help me?

#2

A tutorial at Adafruit, Overview | DS1307 Real Time Clock Breakout Board Kit | Adafruit Learning System
This is a library and an example, GitHub - adafruit/RTClib: A fork of Jeelab's fantastic RTC library

#3

Thank you for the documentation, I have one more question, what is the symbols "*" and "&" found in some programs ?

#4

worrior:
Thank you for the documentation, I have one more question, what is the symbols "*" and "&" found in some programs ?

In C and C++ the operators "*" and "&" can mean different things depending on the context. Here are some:

  1. Multiplication
  2. The value referenced by a pointer
  3. Bitwise AND
  4. The address of a variable/symbol/function

Cheers!

#5
#6