converting a string to lowercase/uppercase depending upon the count of upper/lower case characters in it

i have to output a string in all uppercase if count of uppercase characters in it is more otherwise lowercase string will be shown if lowercase characters are more in the string,in case both characters are equal i will print the string in lowercase only
this the code i have written , but , it’s not giving desired output,like it is returning the same string back to me , please help me with the errors

here’s the code,i am using c++.

string s;
cin>>s;
int uc=0,lc=0;
for (int i = 0; i < s.size(); i++)
{       
    if(isupper(s[i])){
        uc++;
    }
    else{
        lc++;
    }
}
if(uc>lc){
    for (int j = 0; j < s.size(); j++)
    {
        toupper(s[j]);

    }    
    cout<<s<<endl;
}
else{
    for (int k = 0; k < s.size(); k++)
    {
        tolower(s[k]);
    }
    cout<<s<<endl;
}

>Solution :

After your first loop, do this:

string result = (uc>lc) ? toupper(s) : tolower(s);