Please explain this code it talks about the encryption using the Ceaser cipher void encrypt(char message[], int key) { int a; for (a = 0; (a

Please explain this code
it talks about the encryption using the Ceaser cipher

void encrypt(char message[], int key)
{
  int a;
  for (a = 0; (a < 50="" &&="" message[a]="" !='\0' );="" a++) =""  =""  ="">
especially here

    message[a] = message[a] + key;
  cout<"\nencrypted string="" is:=""><><>

}