This code can't run in hackerrank but it run in codeblock and online compiler with same output.plz someone solve this if i am wrong.

 #include <iostream>

using namespace std;

int main() { int n; cout << "Enter any 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 nine" << endl;
}

return 0;

}

int n = stoi(ltrim(rtrim(n_temp)));
if(n>=1 && n<=9){
    cout<<static_cast<char>(n);
}else{
    cout<<"Greater than 9.";
} 
    why does this didn't worked??

include

using namespace std; int main (){ 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 if ( n >9 ) { cout <<"Greater than 9";

}

return 0;

}

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

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

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)));

// Write your code here
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;
default:
    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;

}