i am having a hard time with stl queue

[prognoob]

i thought it would be kinda cool to use stl queue in my c++ program. however, it turns out stl queue is not happy with me...

i have a header, and I have declared the queue as

queue<int> q;

and please do note that i have used #include <queue> too
but it would still not recognize queue as a class, it would tell me "error: expected constructor, destructor, or type conversion before '<' token"

do i need to do anything else other than what I mentioned to use STL queue?

btw i am using g++ to compile my program

[gpraghuram]

Hi,
Have u added the statement after the using namespace std;
#include<queue>

Use this way

#include<queue>
using namespace std;
 

Thanks
Raghuram

[prognoob]

Hi,
Have u added the statement after the using namespace std;
#include<queue>

Use this way

#include<queue>
using namespace std;
 

Thanks
Raghuram

I did use the statement include <queue> before using namespace std;

[gpraghuram]

HI,
If possible can u post the code....

Thanks
raghuram

[weaknessforcats]

You say you have a HEADER that contains:

queue<int> q;

????

Header files are not to contain code but only declarations. If you have queue<int> in a header AND IF the header is included before <queue>, then you will get a compile error.

Do not put variables in header files.

This compiles fine:

#include <iostream>
#include <queue>
using namespace std;
int main()
{
queue<int> q;

return 0;
}

[charian0920]

hi ...
it would be helpful if you put in the code you have for your question ... :)

i thought it would be kinda cool to use stl queue in my c++ program. however, it turns out stl queue is not happy with me...

i have a header, and I have declared the queue as

queue<int> q;

and please do note that i have used #include <queue> too
but it would still not recognize queue as a class, it would tell me "error: expected constructor, destructor, or type conversion before '<' token"

do i need to do anything else other than what I mentioned to use STL queue?

btw i am using g++ to compile my program