Why am I having so much trouble working with I2C EEPROMs?

Using Arduino Programming Questions
10 
 while(1) {
      Wire.beginTransmission(i2caddr);
      if(Wire.endTransmission() == 0)break;
    }

What is that doing?

Read this: Gammon Forum : Electronics : Microprocessors : I2C - Two-Wire Peripheral Interface - for Arduino