Loops Solution in CPP

This Page Contains the Solution in Cpp Programming Language for the Day 5 : Loops, Code Challange of the HackerRank 30 Days of Code.

#include <bits/stdc++.h>

using namespace std;

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

int main()
{
    int n;
    cin >> n;
    cin.ignore(numeric_limits<streamsize>::max(), '\n');
    
    if(2<=n<=20)
    {
        for (int i = 1; i <= 10; i++) 
        {
            cout <<n<<" "<<"x"<<" "<<i<<" "<<"="<<" "<<(n*i)<< endl;
        }
    }
    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;
}