Templates

[ArcherSam]

What does this line of code mean?

Int Holder.first=10;

I am confused, how is a string taking a integer value? Is it a variable taking a vaule?
I am reading the C++ All In One Desk Reference by Jeff Cogswell. This is a line of code in a example for templates.

Also this is my first time ever posting a blog : ). Any help is grateful!

[QWERTYman]

This is a forum ;)

A string is not taking an integer value. int Holder.first = 10; refers to the first variable in the Holder class, which happens here to be type int.

Hope this helps. (Sorry Duoas.)

[Zhuge]

I'm pretty sure you can't do that at all. When assigning to a class's member you don't have the type there.

[firedraco]

Yeah, that code is invalid as you have posted it >_>

Let me guess, they also use void main and #include <conio.h> ? (Don't do either)

[ArcherSam]

Thanks, that helps alot. (QWERTYman).

Oh, here's the full source code:

Listing 5-1 Using Templates to Create Several Versions of a Class


#include <iostream>
#include <stdlib.h)
template <typename T>
class CoolHolder {
public:
T first;
T second;
T third;
T sum() {
return first + second + third;
}
};
int main(int argc, char *argv[])
{
CoolHolder<int> IntHolder;
IntHolder.first = 10;
IntHolder.second = 20;
IntHolder.third = 30;
CoolHolder<int> AnotherIntHolder;
AnotherIntHolder.first = 100;
AnotherIntHolder.second = 200;
AnotherIntHolder.third = 300;
CoolHolder<float> FloatHolder;
FloatHolder.first = 3.1415;
FloatHolder.second = 4.1415;
FloatHolder.third = 5.1415;
cout << IntHolder.first << endl;
cout << AnotherIntHolder.first << endl;
cout << FloatHolder.first << endl;
CoolHolder<int> *hold;
int loop;
for (loop = 0; loop < 10; loop++) {
hold = new CoolHolder<int>;
hold->first = loop * 100;
hold->third = loop *120;
cout << hold->sum() << endl;
delete hold
}
return 0;
}



Also how do you use the formats when composing a fourms. Ex.Source code format(#)