Test is tomorrow
Today: Review over arrays, functions, void, call-by-reference, ?, ?, ?, ?,

material: ch 8 - 13
for, switch, functions, enums, arrays

char char;

cout << direction;

switch (direction)
{
  case 'n':
    cout << "to lazy to hit the shiftkey?";
  case 'N':
    cout << "You are going north!";
    break;
  case 's':
  case 'S':
    cout << "You are going south!";
    break;  
  default:
    cout << "Thats not a valid direction!";
}




for (int i=0;i<5;i++) {
   cout << i << " ";
}

0 1 2 3 4




enum directionType { north, south, east, west};

directionType direction;

cout << "Give me a direction" << endl;
cout << "0..north" << endl;
cout << "1..south" << endl;
//...
int i;
cin >> i;
direction = static_cast<directionType>(i);

if (direction == north) { ... }

switch (direction) {
  case north: cout << "North"; break;
  case south: cout << "South"; break;
  case east: cout << "East"; break;
}

void maxIsGreat();

int main()
{
  maxIsGreat();
  return 0;
}

void maxIsGreat()
{
  cout << "Max is Great!" << endl;
}


void someoneGreat(string who, string what);

int main()
{
  someoneGreat("smart", "Max");
  return 0;
}

void someoneGreat(string who, string what)
{
  cout << who << " is " << what << "!" << endl;
}

void printAB(int a, int b)
{
  cout << a << " " << b;
}

int main()
 {
   int a  = 7;
   int b = 10;
   printAB(b,a);
...

int multiplyAB(int a, int b)
{
  return a*b;
}

int main()
 {
   int a  = 7;
   int b = 10;
   cout << multiplyAB(b,a);
   int c = multiplyAB(b,a);
...



float division(int a, int b)
{
  return static_cast<float>(a)/b;
}

void fight(int &hp_good, int &hp_bad)
{
  // some calculation
  hp_good-=1;
  hp_bad-=10;  
}

...
  fight(hpa,hpb);
...



int a[20], b[20];

a = {1,2,3 }; // does NOT work!!!!!
b = a;  /// does NOT work!!!!!!

int c[4] = {1,6,3,5}; // Initialize
int d[4] = {1,2,3,4,5,6}; // does NOT work!
int e[20] = {1,2,3,4,5}; // works!
        // initializiliase rest to 0!
int f[] = {1,2,3,4}; // array of size 4
int g[20] = {0}; // all set to 0
int h[]; // works, but we're not there yet!

cout << c[2];
e[6] = 12;

for (int i=0;i<4;i++)
{
  cout << c[i] << " ";
}

int j[100];
for (int i=0;i<100;i++) {
  j[i] = i+1;
}

int k[10];
k[0] = 1;
k[1] = 1;
for (int i=2;i<10;i++) 
{
  k[i] = k[i-2]+k[i-1];
}

0  1   2    3   4  5   6   7  8  9
1  1   2    3   5  8   13

int a[10];

for (int i=0;i<10;i++)
{
  a[i] = i+1;
}

for (int i=0;i<10;i++)
{
  a[i] = a[9-i];
}  

0  1  2  3  4  5  6  7  8  9 
10 9  8  7  6  6  7  8  9 10