Vector class

[inflamers]

Hi everyone, i have some issues with the vector class, actually i want to sort my vector or just find something within. I'm tryin to use <algorithm>, made for using list and vector, but it doesn't work very well.... i have many errors while compilating...
Here is the source code :

(struct centre with three integers, x y and mountain)

{
std::vector<centre> vec;
vec.reserve(500);
vec.at(1).x = w;
vec.at(1).y = u;
vec.at(1).mountain = z;
}

and then i use the method sort(vec.begin(), vec.end()); i'd like to sort my vector by mountain....
could you help me please ?? thanks
Mickael.

[horace1]

have a look at this simple example ov sorting avector

    int idata[]={1,5,7,4,9,78,45,23,56,-2,-8,56};
    vector<int> v;
    for (int i=0;i<sizeof(idata)/sizeof(int); i++) v.push_back(idata[i]);
    for(int i=0;i<v.size();i++) cout << v[i] << " ";
    cout << endl;
    sort(v.begin(), v.end());
    for(int i=0;i<v.size();i++) cout << v[i] << " ";
 

it pushes the int data onto the vector then sorts it