need help fast

//for each function i nee the following
// function name - quick description
// Inputs: describe inputs
// Output: What is the return value?
// Side effects: Describe the side effects, if any


bool f1( unsigned long n )
{
for( i=n/2; i>0; --i )
{
if( n%i == 0 )
return true;
}

return false;
}

void f2( long n )
{
if( n <= 0 )
return;
else
{
cout << '*';
f2( n-1 );
}
}

void f3( double &n )
{
n += 0.5;
long i = static_cast<long>( n )
n = static_cast<double> i;
}

double f4( double a, double b )
{
return (a+b)/2;
}

Sounds like homework?

definately not hard either... why not give it a try... if you get stuck on a certain syntax and/or don't understand what it is, feel free to search google.