integer save into single bytes

Using Arduino Programming Questions
3

Hi,
another solution is defining a union:

union Number
{
  long num;
  byte barray[4];
  
} NN;

then set the long field and get the byte array:

  NN.num = 123466L;
  byte b0 = NN.data[0];
  byte b1 = NN.data[1];
  byte b2 = NN.data[2];
  byte b3 = NN.data[3];