#include <iostream>
#include <string>
#include <cctype>
using namespace std;
class TextProcessor{
private:
    static int count;
public:
    static void convertToUpper(string str){
        bool valid =true;
        for(int i=0;i<str.length();i++){
            if(!isalpha(str[i])){
                valid=false;
            }
        }
    }
}