i pass value in integer to given function what will it return int or float

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i f i pass the value as integer to the given function as
int add(int,int)
float add(int,int)

then what it will return as output as it give float/integer

Posted 9-Oct-11 21:43pm

suvaaj

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Malli_S 10-Oct-11 7:24am

What actually you wanna to ask? Because, you cant have both the functions declared at the same time in the same namespace/class.

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Stefan_Lang · Answer 1 · 2011-10-10T02:12:00

It is not possible to determine the answer to your question as there is no way to figure out from the function call alone which version should be used. Therefore the C++ language doesn't allow to define overloads that differ only in return type!

Apart from that, my advice is to not make your functions do unexpected things: If you define a function add(int, int) then everyone will expect it to return an int, no matter what return type you list. So, do everyone (and yourself) a favor and make the return type int! This is specifically important because when you look at the code where a function is called you can not see the function's return type!

వేంకటనారాయణ(venkatmakam) · Answer 2 · 2011-10-09T22:45:00

Solution 3

I did not get your question fully.But, You can not overload a function by differing only the return type.So you can not declare both above functions at a time. either you can declare\define int add(int,int) or float add(int,int).According to the declaration\definition your return type will depends.

Posted 9-Oct-11 22:45pm

వేంకటనారాయణ(venkatmakam)

Mehdi Gholam · Answer 3 · 2011-10-09T21:50:00

Solution 1

It will depend on the left hand side variable type.

If int it will return int, if float it will return float.

Posted 9-Oct-11 21:50pm

Mehdi Gholam

Z. h. Chen · Answer 4 · 2011-10-09T22:04:00

you can use template to write a function like this

template <typename T>
T TestAdd(T t1,T t2)
{
return t1 + t2;
}

float fValue1 = 10.0f, fValue2 = 20.0f;
float fValue3 = TestAdd(fValue1,fValue2);
// fValue3 = 30.0f

int nValue1 = 10, nValue2 = 2;
int nValue3 = TestAdd(nValue1,nValue2);
// nValue3 = 12

CString strValue1 = _T("123456");
CString strValue2 = TestAdd(strValue1,strValue1);
// strValue2 = _T("123456123456");

i pass value in integer to given function what will it return int or float

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