integer save into single bytes

Using Arduino Programming Questions
4

ea123:
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];

Hmm I thought I'm not that stupid but can you help me to implement this.
What is in the data array?

EDIT:
Ok found something I cahnged the code to:

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

  NN.num = 115730L;
  byte b0 = NN.barray[0];
  byte b1 = NN.barray[1];
  byte b2 = NN.barray[2];
  byte b3 = NN.barray[3];

Now it is working perfectly but how can I ad an 'L' to a long integer?

Thx
Andy