dev-cpp-users

RE: [Dev-C++] Templates - course examples don't work!

[Daniel G. <sp...@ho...>]

<html><div style='background-color:'><DIV>
<P>Oh this is wonderful news *sarcasm* So the code is ok but the compiler won't work? What can I do?</P>
<P>It seems silly to revert back to DEV-C++ because my expensive microsoft compiler doesn't compile properly.</P>
<P>Suggestions?<BR><BR></P></DIV>
<DIV></DIV>
<DIV></DIV>&gt;From: "Ioannis Vranos" <NO...@HO...>
<DIV></DIV>&gt;To: "Dev-C++" <DEV...@LI...>
<DIV></DIV>&gt;Subject: RE: [Dev-C++] Templates - course examples don't work! 
<DIV></DIV>&gt;Date: Tue, 2 Apr 2002 14:39:54 +0200 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;Do not use VC++ 6 to learn C++. It doesn't support the ANSI C++ 
<DIV></DIV>&gt;standard and was mentioned as "the broken compiler". Of course it is 
<DIV></DIV>&gt;since it was created at the time of Windows 95! With VC++ 7 things are a 
<DIV></DIV>&gt;lot better of course. 
<DIV></DIV>&gt; 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;The only error that i found in your code is that you had forgotten some 
<DIV></DIV>&gt;quotes. Also iostream.h can be considered an error. 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;Your code in better shape: 
<DIV></DIV>&gt; 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;// This is a program to interchange two values by using function 
<DIV></DIV>&gt;templates. 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;#include <IOSTREAM>
<DIV></DIV>&gt; 
<DIV></DIV>&gt;template<TYPENAME X> 
<DIV></DIV>&gt;X Temp1(X &amp;, X &amp;); 
<DIV></DIV>&gt; 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;int main() 
<DIV></DIV>&gt;{ 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;int Var; 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;int Var1 = 20; 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;int Var2 = 25; 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;cout &lt;&lt; "The value in Var1 = " &lt;&lt; Var1 &lt;&lt; endl; 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;cout &lt;&lt; "The value in Var2 = " &lt;&lt; Var2 &lt;&lt; endl; 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;Var = Temp1(Var1, Var2); 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;cout &lt;&lt; "The sum is: "&lt;&lt; Var &lt;&lt; endl; 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;return 0; 
<DIV></DIV>&gt;} 
<DIV></DIV>&gt; 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;template<TYPENAME X> 
<DIV></DIV>&gt;X Temp1(X &amp;A, X &amp;B) 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;{ 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;X Var; 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;Var = A + B; 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;return Var; 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;} 
<DIV></DIV>&gt; 
<DIV></DIV>&gt; 
<DIV></DIV>&gt; 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;Ioannis 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;* Ioannis Vranos 
<DIV></DIV>&gt;* Programming pages: http://www.noicys.cjb.net 
<DIV></DIV>&gt;<HTTP: www.noicys.cjb.net /> 
<DIV></DIV>&gt;* Alternative URL: http://run.to/noicys 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;-----Original Message----- 
<DIV></DIV>&gt;From: dev...@li... 
<DIV></DIV>&gt;[mailto:dev...@li...] On Behalf Of Daniel 
<DIV></DIV>&gt;Glenfield 
<DIV></DIV>&gt;Sent: Tuesday, April 02, 2002 12:43 PM 
<DIV></DIV>&gt;To: dev...@li... 
<DIV></DIV>&gt;Subject: [Dev-C++] Templates - course examples don't work! 
<DIV></DIV>&gt; 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;I'm using VC++ and the examples from my course will not compile and I 
<DIV></DIV>&gt;know not why! It tells me A and B are not declared, but I think they 
<DIV></DIV>&gt;are! Help me out will you? 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;// This is a program to interchange two values by using function 
<DIV></DIV>&gt;templates. 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;#include <IOSTREAM.H>
<DIV></DIV>&gt; 
<DIV></DIV>&gt;template<TYPENAME X> 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;int Temp1(X &amp;, X &amp;); 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;int main() 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;{ 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;int Var; 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;int Var1 = 20; 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;int Var2 = 25; 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;cout &lt;&lt; "The value in Var1 = " &lt;&lt; Var1 &lt;&lt; endl; 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;cout &lt;&lt; "The value in Var2 = " &lt;&lt; Var2 &lt;&lt; endl; 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;Var = Temp1(Var1, Var2); 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;cout &lt;&lt; "The sum is: &lt;&lt; Var &lt;&lt; endl; 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;return 0; 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;} 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;template<TYPENAME X> 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;int Temp1(X &amp;A, X &amp;B) 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;{ 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;X Var; 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;Var = A + B; 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;return Var; 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;} 
<DIV></DIV>&gt; 
<DIV></DIV>&gt; 
<DIV></DIV>&gt; _____ 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;Send and receive Hotmail on your mobile device: Click 
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RE: [Dev-C++] Templates - course examples don't work!

[Ioannis V. <no...@ho...>]

Sometime ago there was someone from the list who asked (me or all, i
can't recall) what compiler to buy and i had recommended him either
Borland C++ Builder or to wait for the upcoming Visual C++ 7 .NET. But
he didn't listen to me and he would buy the 5 years old(!) VC++ 6. I do
not remember the person but if he was you well... Whether you are him or
not, well there are 2 options: There is VC++ 7 Upgrade package (but the
IDE of 7 sucks) and there is the *extremelly good* Intel C++ 5 compiler
which works under the VC++ IDE and it is highly standard compliant and
it has *crazy* speed/space optimizations. Very high state of the art. I
haven't seen it personally but i have heared very good words from good
programmers. Anyway the options can be summarized: Intel C++ 5 for VC++,
Borland C++ Builder 6 and Visual C++ 7 Upgrade.
 
 
Ioannis

* Ioannis Vranos
* Programming pages: http://www.noicys.cjb.net
<http://www.noicys.cjb.net/> 
* Alternative URL: http://run.to/noicys

-----Original Message-----
From: Daniel Glenfield [mailto:sp...@ho...] 
Sent: Tuesday, April 02, 2002 2:06 PM
To: no...@ho...; dev...@li...
Subject: RE: [Dev-C++] Templates - course examples don't work!



Oh this is wonderful news *sarcasm* So the code is ok but the compiler
won't work? What can I do?

It seems silly to revert back to DEV-C++ because my expensive microsoft
compiler doesn't compile properly.

Suggestions?

Re: [Dev-C++] Templates - course examples don't work!

[Daniel W. <d_w...@ho...>]

Hi!!

The code is like is below, but it doesnt interchange any values, only =
print a sum
What Ioannis says is truth it "should" work under the ANSI standard. The =
corrections he made are for that standard, for this code to work in =
Visual C++ 6 you should correct only one line (and the quotes):

Bye
Daniel Wilches
dwi...@ma...
=20
// This is a program to interchange two values by using function =
templates.

#include <iostream.h>

template<typename X>

int Temp1(X& A, X& B);     // This is the line you should change in =
VC++, in ANSI compilers you can write "int Temp1(X& , X& );"

int main()

{

int Var;

int Var1 =3D 20;

int Var2 =3D 25;

cout << "The value in Var1 =3D " << Var1 << endl;

cout << "The value in Var2 =3D " << Var2 << endl;

Var =3D Temp1(Var1, Var2);

cout << "The sum is:" << Var << endl;

return 0;

}

template<typename X>
int Temp1(X& A, X& B)
{

X Var;

Var =3D A + B;

return Var;

}