Use while loop and if and else if conditions to solve problem.
Code:

#include <iostream>
using namespace std;

int main() 
{
    int t;
    cin >> t;
    while(t--)
    {
        int a,b,c;
        cin >> a >> b>>c;
        if(a >= b && a >= c)
        {
            if(b >= c)
                cout << b << endl;
            else
                cout << c << endl;
        }
        else if(b >= a && b >= c)
        {
            if(a >= c)
                cout << a << endl;
            else
                cout << c << endl;
        }
        else if(c >= a && c >= b)
        {
            if(b >= a)
                cout << b << endl;
            else
                cout << a << endl;
        }
    }
    return 0;
}