// 2008 mlab.taik.fi/paja
// Understanding operators. 

int addInt;
int subInt;
int mulInt;
int divInt;
int modInt;
int myInt;
unsigned int myUnint = 100;

void setup(){
   Serial.begin(9600); 
   // + symbol is a add operator. The answer sholuld be 6.
   addInt = 1 + 5; 
   // - symbol is a subtract operator. The answer sholuld be 2. 
   subInt = 1 - 5; 
   // * symbol is a multiple operator. The answer sholuld be 30. 
   mulInt = 10 * 3;   
   // / symbol is a divide operator. The answer should be 3. 
   divInt = 10 / 3;  
   // % symbol is a modulus operator. The answer should be 1.   
   modInt = 10 % 3;  
   // Interger data type can store numbers from -32,768 to 32,767.   
   myInt = -1;  
   // Unsigned integer only store positive number from 0 to 65,535.   
   myUnint = -1;        
}

void loop(){
  Serial.print("1 + 5 = ");
  Serial.println(addInt);
  
  Serial.print("1 - 5 = ");
  Serial.println(subInt);
  
  Serial.print("10 * 3 = ");
  Serial.println(mulInt);
  
  Serial.print("10 / 3 = ");
  Serial.println(divInt);
  
  Serial.print("10 % 3 = ");
  Serial.println(modInt);
  
  Serial.print("myInt: ");
  Serial.println(myInt);
  
  Serial.print("myUnint: ");
  Serial.println(myUnint);
  
  Serial.println();
  
  delay(3000);
}