Problem with cin.get()

#define VSIZE 3

void UserInput(char arrStudent [VSIZE][30])
{
system("cls");
cout<<"\n****** Student Detail Screen ******" <<endl<<endl;

	for (int n = 0;n<VSIZE;n++)				
	{
		int nValid = 0;					
		cout << "Details for student number "<<n<<":"<<endl<<endl;
		cout << "Please input Students Name"<<endl;
		cout << "(maximum of 30 characters): ";
		
		do									
		{
		
		cin.ignore();						
		cin.get(chTemp,200,'\n');				
		
			if(strlen(chTemp) =< 0) //this is my atemp at identifiying a carige return
			{
				cout << "Name contains no characters, Please try again: ";
				cin.ignore();
				cin.get(chTemp,200);
			}
			if(strlen(chTemp) > 30)			
			{
				cout << "Name contains " << strlen(chTemp) << " characters, Please input a shorter name: ";
				cin.ignore();
				cin.get(chTemp,200);		
			}
			else 
				{
					nValid = 1;			
			}
		}
		while (nValid = 0);				
		strcpy(arrStudent[n],chTemp);		

	}
}

int main()
{
    int num = 0;
    int students;
    string chTemp;
    string arrStudent[100];
    char ch;
    do
    {
    cout<<"How many students would you like to add : ";
    cin>>students;
    cin.ignore();
    for(int i = 1; i < students + 1; i++)
    {
            cout<<i<<": Students name (30 characters or less)\n";
            
    do
    {
            cout<<"Please enter students name: ";
            num = 0;
            getline(cin,chTemp);
            if(chTemp.length() <= 0)
            {
                 cout<<"Did you forget to add student number: "<<i<<" \n";
                 num = 1;
/*Dont do anything in the two if statemenst because if you dont test the next entered amount its bound to fail*/
                 }
                        if(chTemp.length() > 30)
                        {
                             cout<<"You can only enter 30 characters!\n";
                             num = 1;
                             }
                        }
                        while(num == 1);
                        arrStudent[i]=chTemp;
                        }
            cout<<"==================================================  ==========\n";
            cout<<"You have successfully entered : ";
            for(int l = 1; l <= students; l++)
            {
                    cout<<arrStudent[l]<<", ";
                    }
            cout<<"to your roster.\n";
            cout<<"==================================================  ==========\n";
            cout<<"Would you like to add more (Y/N) : ";
            cin>>ch;
            }
            while(ch != 'Y' || ch != 'y');   
system ("PAUSE");
return 0;
}

while (nValid = 0);