Help with static cast

[SVcpp]

I'm trying to learn how to use static cast. I need help understanding why my code isn't working when I try to create a while loop changing a char value to a int value, for use in comparing.

Maybe the code will just explain better than I can

do  
 39 { 
 40
 41   
 42     cout << "What's your major? " << endl; // get user major
 43     cin.get (declare_m, MAJOR,'\n');
 44     declare_m[0] = toupper(declare_m[0]);
 45     cin.ignore(100,'\n');  
 46 
 47     int len2 = strlen(declare_m); //capitalize major even strings
 48     for (int i = 1; i < len2; ++i) 
 49     {  
 50         if( declare_m[i]  == ' ')
 51            declare_m[i+1] = toupper(declare_m[i+1]);
 52     }
 53 } while (dynamic_cast<int>(declare_m) > MAJOR);
 54 
 55    if (strcmp(declare_m,"Computer Science" ) == 0)
 56         cout << "Your major is " << declare_m << " fellow nerd!!" << endl;
 57    else
 58
 59      cout << "Your major is: " << declare_m  << endl;
 60 
 61      return 0;
 62 }

[Smac89]

What is this line of code supposed to be doing?

while (dynamic_cast<int>(declare_m) > MAJOR);
...

What do you expect to get by casting a string to int?
Did this code even compile?

[SVcpp]

That's why I'm asking other people. It didn't I was just trying something random.