Hey guys, here a more compact solution:

include

using namespace std;

string ltrim(const string &); string rtrim(const string &);

int main() { string n_temp; getline(cin, n_temp);

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

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

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





return 0;

}

string ltrim(const string &str) { string s(str);

s.erase(
    s.begin(),
    find_if(s.begin(), s.end(), not1(ptr_fun<int, int>(isspace)))
);

return s;

}

string rtrim(const string &str) { string s(str);

s.erase(
    find_if(s.rbegin(), s.rend(), not1(ptr_fun<int, int>(isspace))).base(),
    s.end()
);

return s;

}

include

include

using namespace std; int main() {

int n=0;
cin>>n;

if(n>=1&&n<=pow(10,9)) {
    if(n>=1&&n<=9) {
        if(n==1) 
            cout<<"one"<<endl;
        else if(n==2)
            cout<<"two"<<endl;
        else if(n==3)
            cout<<"three"<<endl;
        else if(n==4)
            cout<<"four"<<endl;
        else if(n==5)
            cout<<"five"<<endl;
        else if(n==6)
            cout<<"six"<<endl;
        else if(n==7)
            cout<<"seven"<<endl;
        else if(n==8)
            cout<<"eight"<<endl;
        else
            cout<<"nine"<<endl;
    }
    else {
        cout<<"Greater than 9"<<endl;
    }
}
return 0;

}

Can i use this code in my website? Is it helpful?

Very Basic and Understandable code.

int main()
{
    string n_temp;
    getline(cin, n_temp);

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

    // Write your code here
    if (n<1)cout<<"Lesser than 1";
    else if (n==1)cout<<"one";
    else if (n==2)cout<<"two";
    else if (n==3)cout<<"three";
    else if (n==4)cout<<"four";
    else if (n==5)cout<<"five";
    else if (n==6)cout<<"six";
    else if (n==7)cout<<"seven";
    else if (n==8)cout<<"eight";
    else if (n==9)cout<<"nine";
    else cout<<"Greater than 9";
    

    return 0;
}

If you want a simple method (Very basic). you can use switch case. It will work just fine and also switch will come easier to write.

include

using namespace std;

int main() {

int n;
 cin>>n;


if(n==1){
    cout<<"one"<<endl;
}
else if(n==2){
    cout<<"two"<<endl;
}
else if(n==3){
    cout<<"three"<<endl;
}
else if(n==4){
    cout<<"four"<<endl;
}
else if(n==5){
    cout<<"five"<<endl;
}
else if(n==6){
    cout<<"six"<<endl;
}
else if(n==7){
    cout<<"seven"<<endl;
}
else if(n==8){
    cout<<"eight"<<endl;
}
else if(n==9){
    cout<<"nine"<<endl;
}
else{
    cout<<"Greater than 9"<<endl;
}

    return 0;


return 0;

}