My code is the below but it is not paasing only one test case, how can solve it?

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)));

if ((1<n)&&(n<=9))
{
switch (n) {

case 1:
    cout << "one";
    break;

case 2:
    cout << "two";
    break;

case 3:
    cout << "three";
    break;

case 4:
    cout << "four";
    break;

case 5:
    cout << "five";
    break;

case 6:
    cout << "six";
    break;

case 7:
    cout << "seven";
    break;
case 8:
    cout << "eight";
    break;
case 9:
    cout << "nine";
    break;

}

}
else if (n>9)
{
    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;

}

vector words = {"one", "two", "three","four", "five", "six", "seven","eight","nine"}; if(n>9) cout<<"Greater than 9"; else cout<

NO ERROR BUT IT SHOWS ERROR WHY?

include

using namespace std;

int main() { int n; cout<<"Enter the positive number from One to Nine="<>n;

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 nine.";
}

return 0;

include

include

using namespace std; int main() {

int n;
cout<<"enter value = ";
cin>>n;

if(n <=9 ){
    if(n == 0){
        cout<<"zero";
    }
    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;

}

include

using namespace std;

int main() { string s; int n; cin>>n; 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; }