C++ questions

int main()
{
    int Stu[2][20] = { {1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20},
                       {21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40} };
    char Name[20] = { 'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T' };

    int Num;
    int Low = 1;
    int High = 20;
    int Mid = 0;

    cout << "Enter the student's school number :";
    cin >> Num;

    for (int i = 0; i < 5; i++)
    {
        Mid = (Low + High) / 2;
        if (Num = Stu[0][Mid])
        {
            Cout << "School Registration" << "<< Stu[0][Mid]<" The name of the student is "<< Name[Mid] <<" and the number is "<<<Stu[1]<"< "Number <<<<"
            break;
        }
        else if (Num > Stu[0][Mid])
        {
            Low = Mid;
        }
        else
        {
            High = Mid;
        }
        if (Low > High)
        {
            cout << "Not Found" << endl;
            break;
        }
    }
}

if (Num = Stu[0][Mid])
{
Cout << "School Registration" << "<< Stu[0][Mid]<" The name of the student is "<< Name[Mid] <<" and the number is "<<<Stu[1]<"< "Number <<<<"
break;
}