string number_name[10]= { 
    "one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "Greater than 9"
};

string n_temp;
getline(cin, n_temp);

int n = stoi(ltrim(rtrim(n_temp)));

// Write your code here
int idx = n < 10 ? n-1 : 9;

cout << number_name[idx] << endl;      
return 0;

include

using namespace std;

int main() { int n; cin >> n;

string words[] = {
    "one", "two", "three", "four", "five",
    "six", "seven", "eight", "nine"
};

if (n >= 1 && n <= 9)
    cout << words[n - 1] << endl;
else
    cout << "Greater than 9" << endl;

return 0;

}

include

using namespace std;

int main() { string word[10] = {"Greater than 9", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine"};

int n;
string s;


getline(cin, s);

stringstream ss(s);
while (ss >> n) {
    if (n >= 1 && n <= 9)
        cout << word[n] << " ";
    else
        cout << word[0] << " ";
}

cout << endl;
return 0;

}

Here is Conditional Statements solution in C++ - https://programmingoneonone.com/hackerrank-conditional-statements-solution-in-cpp.html

#include<iostream>
using namespace std;
int main(){
        int n;
        cin>>n;
        if(n==1) cout<<"one";
        if(n==2) cout<<"two";
        if(n==3) cout<<"three";
        if(n==4) cout<<"four";
        if(n==5) cout<<"five";
        if(n==6) cout<<"six";
        if(n==7) cout<<"seven";
        if(n==8) cout<<"eight";
        if(n==9) cout<<"nine";
        if(n>9) cout<<"Greater than 9";

    return 0;   
}