Compiler differences

[teser]

This program works using Borland 4 but does not work when I compile it with Microsoft Visual C++.


[tt]
#include <iostream.h>

template<class T> T templat(T a,T b)
{
return((a > b) ? a: b);
}

float templat(float a,float b);
int templat(int a,int b);

void main(void)
{
float a = 2.335, b = 4.35;
cout << &quot;FLOAT = &quot; << a << &quot; and &quot; << b <<
templat(a,b) << endl;
int c = 2, d = 4;
cout << &quot;INT = &quot; << c << &quot; and &quot; << d <<
templat(c,d) << endl;
}[/tt]



Here is the Visual C++ error:
Linking...
templat.obj : error LNK2001: unresolved external symbol &quot;int __cdecl templat(int,int)&quot; (?templat@@YAHHH@Z)
templat.obj : error LNK2001: unresolved external symbol &quot;float __cdecl templat(float,float)&quot; (?templat@@YAMMM@Z)
Debug/templat.exe : fatal error LNK1120: 2 unresolved externals
Error executing link.exe.

templat.exe - 3 error(s), 0 warning(s)
.

Any ideas why this is happening??

 

[tchouch]

Try so:
template <class T> class templat
{
public:
T compare(T a,T b);
};

template<class T> T templat<T>::compare(T a,T b)
{
return((a > b) ? a: b);
}

templat<float> ftempl;
templat<int> itempl;

int main()
{
float a = 2.335, b = 4.35;
cout << &quot;FLOAT = &quot; << a << &quot; and &quot; << b <<
ftempl.compare(a,b) << endl;
int c = 2, d = 4;
cout << &quot;INT = &quot; << c << &quot; and &quot; << d <<
itempl.compare(c,d) << endl;
}

It works allways.

If You needs only functions, make so:
float compare(float a,float b)
{
return((a > b) ? a: b);
}

int compare(int a,int b)
{
return((a > b) ? a: b);
}

it works without any classes.