I made a certain program and I am now trying to get rid of some annoying little bugs. Going to post a part of the code so you guys can help me out .

Code:
#include <iostream

int main()
{
    cout<<"1- New Game" <<endl;
    cout<<"2- Exit" <<endl;
    cout<<"Choose your option: " <<endl;

    bool ValidOption = false;


    while (ValidOption != true)
    {

       char option[100];
       cin.clear();
       cin>>option;

       int int_option = atoi(option);

       switch (int_option)
       {
       case 1:
           ValidOption = true;
           cout<<"ok.";
       case 2:
           ValidOption = true;
           cout<<"ok";
       default:
           ValidOption = false;
           cout<<"Error: ";
           break;
      }
   }
}
Ok so the code above displays a simple menu and it will display "ok" whether you insert "1" or "2".
Now if you are to insert a char, string or anything else it will work, unless you separate it by a space. The loop will run twice considering cin stops at spaces (Which means it will display "error:" twice). Can anyone help me?

Example:

1- New Game
2- Exit
Choose your option: 3
Error: 4
Error: gfgdg
Error: ad
Error:^Z
Error:adsad adada
Error: Error: 1
"ok"