INT nSomeVariable;
FLOAT fBarWeight;
DWORD dwUsersNumber;
BOOL bIsEngineStarted;
DOUBLE dCircleArea;
DOUBLE m_dCircleArea;  //class private variable, prepend m_ prefix

PVOID pSomeVoidPointer;

const INT USERS_NUMBER;

int i, j, n, m, tmp;  //some local loops variables, temporary variables

namespace MyNameSpace;

vector<int> nUsers;
vector<char *> pszUserNames;

class CSomeClass;

INT DoWork(INT nTimeOfDay);
FLOAT CalculateRadius(const& Circle rCircle);
INT StartIOManager();
INT OpenDvdPlayer(); //if abbreviation takes more than
// 2 letters do not capitalize the whole word

int someVariable;
float barWeight;
unsigned int usersNumber;
bool isEngineStarted;
double circleArea;
double circleArea; //refer to a class private variable
// in code as this->circleArea

void^ someVoidPointer;

const int UsersNumber;

int i, j, n, m, tmp;  //some local loops variables, temporary variables

namespace MyNameSpace;

array<int> users;
array<String> userNames;

class SomeClass;

int DoWork(int timeOfDay);
float CalculateRadius(const& Circle circle);
int StartIOManager();
int OpenDvdPlayer();  //if abbreviation takes more than 2 letters
// do not capitalize the whole word

void some_function(int param)
{
        //function body
}

class SomeClass
{
        //class body
};

// this is preferred by LiXizhi, because it is more clear about scoping. And code does not appear too clouded
if (some_condition)
{
        //...
}

// this is preferred by K&R, because it is shorter. If you use this, use it consistently.
if (some_condition) {
        //...
}

float a, b, c, d;
int e, f, g, h;

a = (b + d) / (c * d);

e = f - ((g & h) >> 10);    //good
e =f-( (g&h ) >>10);        //bad