How can i add 'struct array' size floating point array[100000] in 2D?

here , my code is running well to find out the maximum profit using the "Fractional Knapsack" method. But the problem is if add 2d array size array[100000] then it hangs my code blocks. Please, if you can help then please help me to solve it out.

//Fractional Knapsack
#include<bits/stdc++.h>
using namespace std;
struct iteam
{
    double w,p,u;
};
bool compare( iteam a, iteam b)
{
    return a.u>b.u;
}
int main()
{
    int n,w;
    iteam arry[100]; // << ==== Here I need to add the array size=100000;
    cin>>n>>w;
    for(int i=0; i<n; i++)
    {
        cin>>arry[i].w>>arry[i].p;
        arry[i].u = arry[i].p/arry[i].w;
    }
    sort(&arry[0],&arry[n],compare);
    int p=0;

    for (int i=0; i<n; i++)
    {
        if(w>arry[i].w)
        {
            p=p+arry[i].p;
            w=w-arry[i].w;
        }
        else{
            p=p+w*arry[i].u;
            w=0;
        }
    }

    cout<<"Total Profit: "<<p<<endl;

}