Question

Write a program in C++ that generates and displays the first N three digit odd numbers. Whereas the number N is provided by the user.

Answer 1

#include<iostream>
using namespace std;

int main()
{
   // prompt user to enter the value of N
   int N;
   cout << "How many numbers you want to generate? ";
   cin >> N;
   // an array to store the numbers
   int *arr = new int[N];
   // generate first N 3 digit odd numbers (3 digit means, the range is between 101 & 999)
   // we can start the loop from 101 instead of 100 as we know 100 is an even number
   int i = 0, j = 101;
   while (i <= N || (j >= 101 && j <= 999))
   {
       if (i == N || !(j >= 101 && j <= 999))
           break;
       if (j % 2 != 0)
           arr[i++] = j;
       j++;
   }
   // display the array
   cout << "\nFirst " << N << " 3 -digit odd numbers: [";
   for (int i = 0; i < N; i++)
   {
       if (i == N - 1)
           cout << arr[i] << "]\n";
       else
           cout << arr[i] << ", ";
   }
   return 0;
}

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