git.piffa.net Git - arduino/blob - books/beginning_c_code/Chapter10/Listing10_2/Listing10_2.ino

   1 /*
   2   Purpose: To show the use of the dot operator
   3   Dr. Purdum, Aug. 25, 2012
   4 */
   5
   6
   7 struct servicePeople {
   8   int ID;
   9   char Name[20];
  10   char PW[10];
  11   long Phone;
  12 } myServicePeople, yourServicePeople;
  13 struct servicePeople SetPhoneNumber(struct servicePeople temp);        // New
  14 void setup() {
  15   Serial.begin(9600);
  16   Serial.print("myServicePeople lvalue: ");
  17   Serial.print((int) &myServicePeople);
  18   Serial.print("  yourServicePeople lvalue: ");
  19   Serial.println((int) &yourServicePeople);
  20   yourServicePeople.ID = 205;
  21   Serial.print("myServicePeople.ID rvalue: ");
  22   Serial.print(myServicePeople.ID);
  23   Serial.print("  yourServicePeople.ID rvalue: ");
  24   Serial.println(yourServicePeople.ID);
  25   myServicePeople = SetPhoneNumber(yourServicePeople);                 // Changed
  26   Serial.println("After assignment:");
  27   Serial.print("myServicePeople.ID rvalue: ");
  28   Serial.print(myServicePeople.ID);
  29   Serial.print("  yourServicePeople.ID rvalue: ");
  30   Serial.println(yourServicePeople.ID);
  31   Serial.print("A servicePerson structure takes ");
  32   Serial.print(sizeof(servicePeople));
  33   Serial.println(" bytes of storage.");
  34   Serial.print("myServicePeople.Phone rvalue: ");  // New
  35   Serial.print(myServicePeople.Phone);                       // New
  36 }
  37 void loop(){
  38
  39 }
  40 // All lines below are new
  41 struct servicePeople SetPhoneNumber(struct servicePeople temp)
  42 {
  43   temp.Phone = 2345678;
  44   return temp;
  45 }
  46 \r