Answer & Explanation:
//written in java
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
// variable for number imput and for the output to
//to be calculated
int number, output = 0;
//a do while loop to first ask for user input
//and check if its a odd number and a positive integer
do {
System.out.println("Please enter a positive odd integer");
//scanner class to accept user input
Scanner input = new Scanner(System.in);
number = input.nextInt();
//the next line make sure input is a
// positive integer and also odd
//number
} while (number % 2 == 0 || number < 1);
//for to sum all value of odd numbers between
//1 and the inputted value
for (int i = 3; i < number; i = i + 2) {
output = output + i;
}
//print out output
System.out.println("sums of all the odd numbers between 1 and the " + number + " is " + output);
}
}
...............................................................................................................................................
Sample of the program output
> Please enter a positive odd integer
< 12
> Please enter a positive odd integer
< 13
> sums of all the odd numbers between 1 and the 13 is 35