For Loop in C++ HackerRank Solution
A for loop is a programming language statement which 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.
Input Format
You will be given two positive integers, a and b (a<=b), separated by a newline.
Output Format
For each integer n in the interval [a,b] (given as input) :
-
If 1<=n<=9, then print the English representation of it in lowercase. That is “one” for 1, “two” for 2, and so on.
-
Else if n>9 and it is an even number, then print “even”.
-
Else if n>9 and it is an odd number, then print “odd”.
Sample Input
8
11
Sample Output
eight
nine
even
odd
Solution
#include <iostream>
#include <cstdio>
using namespace std;
int main() {
// Complete the code.
int a, b;
string numbers[] = {"zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine"};
cin >> a;
cin >> b;
for (int i = a; i <= b; i++) {
if (i <= 9) {
cout << numbers[i] << std::endl;
} else {
if (i % 2 == 0) {
cout << "even" << std::endl;
} else {
cout << "odd" << std::endl;
}
}
}
return 0;
}
