HackerRank For loop solution in C++ Programming

HackerRank C++ for loop problem solution – In this HackerRank For Loop problem solution in the C++ programming language, A for loop is a programming language statement that allows code to be repeatedly executed.

The syntax is

for ( <expression_1> ; <expression_2> ; <expression_3> )

    <statement>

expression_1 is used for intializing variables which are generally used for controlling the terminating flag for the loop.

expression_2 is used to check for the terminating condition. If this evaluates to false, then the loop is terminated.

expression_3 is generally used to update the flags/variables.

A sample loop is

for(int i = 0; i < 10; i++) {

    …

}

In this challenge, you will use a for loop to increment a variable through a range.

C++ For loop problem solution.

#include <iostream>
#include <cstdio>
#include<bits/stdc++.h>
using namespace std;
int main()
{
    int a,b;
    string c[]={"","one","two","three","four","five","six","seven","eight","nine"};
    cin>>a>>b;
    for(int i=a;i<=b;i++)
        cout<<((i<=9)?c[i]:((i%2==0)?"even":"odd"))<<endl;
}

Second solution

#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;

int main() {

    int a, b;
    string represent[10] = {"zero", "one", "two", "three", "four",
        "five", "six", "seven", "eight", "nine"};
    cin >> a >> b;
    for(int i = a; i <= b; i++) {
        
        if(i > 9) {
            if(i % 2 == 0)
                cout << "evenn";
            else cout << "oddn";
        }
        else {
            cout << represent[i]<<endl;
        }
    }
    return 0;
}