How to use vector of structure ?

Code:

struct structtid
{
  int tid; //transaction id list
  int *tidptr;  // pointer to the transaction
  int transnum; //size of each transaction
};

<vector>structtid t;

structtid temp;
temp.tid = 1;
temp.transnum = 10;
t.push_back(temp);

I tried to add a structure into t but there is error. I also try to declare <vector>int tidptr in sttucttid, but there is error too..

Can anyone help me? Thanks!

Um, maybe because the syntax is vector<structtid> and vector<int>?

Using:

#include <vector>

Will allow you to declare a vector from the Standard Template Library:

std::vector<int> Ages(10);

Writing std:: all the time though could be a little annoying. So after the include, writing:

using namespace std;

Will import the std namespace and now you can just:

vector<int> Ages(10);

To declare 10 spots for an integer in the vector called Ages.

I understand that a vector of integer can be declared and elements in integer can be easily added to it. But what about a vector of structure? Where the structure is defined by me. Can it be done too?

I see absolutely no reason why you could not I also added onto your code. A nifty feature of C++ is the fact the structs and classes are exactly the same (public vs. private, whatev). This means you can have a struct constructor, reducing the need for your temporary struct to push onto the vector. This code works fine for me.

Code:

struct structtid
{
	int tid;       // transaction id list
	int *tidptr;   // pointer to the transaction
	int transnum;  // size of each transaction

	structtid(int tid, int transnum)
	{
		this->tid      = tid;
		this->transnum = transnum;
	}
};

int main(int argc, char *argv[])
{
	std::vector<structtid> t;
	t.push_back(structtid(1, 10));

	return 0;
}

I see absolutely no reason why you could not

whoa! thanks, i think this is what i need. i will try it later. thanks!