Count type of Characters

#include<iostream>
#include<string>
#include<cctype>
using namespace std;
int main(){
    int t; cin >> t;
    while(t--){
        string s; cin >> s;
        int upper = 0, lower = 0, numbers = 0, special = 0;
        for(int i = 0; i < s.size(); i++){
            if(isupper(s[i])) upper++;
            else if(islower(s[i])) lower++;
            else if(isdigit(s[i])) numbers++;
            else special++;
        }
        cout << upper << endl;
        cout << lower << endl;
        cout << numbers << endl;
        cout << special << endl;
    }
}