Simple Vector Problem

[Nepomuk]

Hi everyone!
Until now, I've almost only programmed in Java and am now learning C++ (using Bjarne Stroustrup's book). Now, I wanted to test one of the examples from the book, but somehow it doesn't work as it should.
Here's my code, reduced to the most simple elements:

#include <iostream>
#include <stdexcept>
 
using namespace std;
 
vector<int> myVec(100);
 
int main()
{
        for(int i=0; i<26; i++)
        {
                myVec[i]=i;
        }
}
 

When trying to compile it with g++, I get: (translated from german)

vectorTest.cpp:12: Error: expected constructor, destructor, or type conversion before »<« token
vectorTest.cpp: In function »int main()«:
vectorTest.cpp:23: Error: »myVec« was not defined in this scope
 

Here, line 12 is the line "vector<int > myVec(100);" and line 23 is "myVec[i]=i;".
In Java, I would guess, that a line like

myVec = new Vec<int>();
 

was missing, but as it's not in the book, there must be some other error.

I'm sure, the error is really simple, but I just can't find it. Who will solve the mystery for me?

Greetings,
Nepomuk

[Laharl]

You need to #include <vector>.

[Nepomuk]

You need to #include <vector>.

I KNEW it would be simple! ^^
Thanks a lot, it works fine now. Thing is, in this book, he just left out all "#include"s and I just assumed, vector was in one of those, he had mentioned.
Do you have to include a lot of classes like "vector" separately or are most in libraries like "iostream"?

Greetings,
Nepomuk

[Ganon11]

You have to #include any STL classes you use, such as set, map, vector, list, etc. Otherwise, most of what you need can be found in iostream or string.

[Nepomuk]

You have to #include any STL classes you use, such as set, map, vector, list, etc. Otherwise, most of what you need can be found in iostream or string.

Thanks a lot, I'll keep that in mind.

Greetings,
Nepomuk

[JosAH]

Keep your Bjarne Stroustrup open at page 431 etc. (at least in my old copy); it
lists the most important header files from the standard library.

kind regards,

Jos

[Nepomuk]

Keep your Bjarne Stroustrup open at page 431 etc. (at least in my old copy); it
lists the most important header files from the standard library.

kind regards,

Jos

Thanks, it's the same page in my quite new "Special Edition". Those lists will come in handy next time! ^^

Greetings,
Nepomuk