CPP

set size in c++

set<int> setTemp {12,23,34,45,56,67};
int setLen = setTemp.size();
cout<<setLen<<endl;

// output:   6 

C++ to specify size and value

// CPP program to create an empty vector
// and push values one by one.
#include <iostream>
#include <vector>
using namespace std;
 
int main()
{
    int n = 3;
 
    // Create a vector of size n with
    // all values as 10.
    vector<int> vect(n, 10);
 
    for (int x : vect)
        cout << x << " ";
 
    return 0;
}