Finding Errors

[rachel0630]

I've just begun learning C++
got some problems with error finding...

I know there are some errors in these program segments
but not sure exactly what they are
nor know how to explain

please help me out ...


: )



ps. For a particular program segment,
there may be no errors present in the segment.











a)

template < class A >
int sum( int num1, int num2, int num3 )
{
return num1+ num2+ num3;
}




b)

void printResults( int x, int y )
{
cout << "The sum is " << x + y << '\n';
return x + y;
}




c)

template <A>
A product(A num1, A num2, A num3 )
{
return num1 * num2 * num3;
}




d)

double cube( int );
int cube( int );

[Danielsson]

I've just begun learning C++

and already using templates?

a) this code will compile although the template is useless - type A is not used in the function definition

b) void function can't contain return statement, change return type to int
int printResults(int x, int y)

c) class or typename missing
template <class A> or template <typename A>

d) ok

[billinares]

I'm not sure about d)

I believe you cannot overload a function by its return value, only by its paramter list.

[Danielsson]

I believe you cannot overload a function by its return value, only by its paramter list.

Yes, you're right. I meant it's OK if used as independent declarations (in different program codes). Sorry for confusion.

[rachel0630]

I've learnt a little about C last term
and this term we're going on to C++
I didn't catch up with progress last term
so kind of have a big problem now
simply just using templates gives me a big headache~

anyway,

thank you all sooooooooo much ^ ^