Answer to Question #183008 in C++ for Vincenzo Santoro

Question

Write a program that uses while loops to perform the following steps:

1. Prompt the user to input two integers: firstNum and secondNum

• (firstNum must be less than secondNum).

1. Output all odd numbers between firstNum and secondNum.

• Separate each number with a space

1. Output the sum of all even numbers between firstNum and secondNum.
2. Output the numbers and their squares between 1 and 10.
3. Output the sum of the square of the odd numbers between firstNum and secondNum.
4. Output all uppercase letters.

• Separate each letter with a space

Answer 1

#include <iostream>

using namespace std;

int main()
{
    int firstNum = 0;
    int secondNum = 0;

    cout << "Enter first number: ";
    cin >> firstNum;

    cout << "Enter second number: ";
    cin >> secondNum;

    if (firstNum >= secondNum) {
        cout << "First number must be less then second number" << endl;
        return 0;
    }

    cout << "Odd numbers: ";
    int i = firstNum;
    while (i <= secondNum) {
        if (i % 2 == 1)
            cout << i << " ";
        i++;
    }

    cout << endl << "Even numbers: ";
    i = firstNum;
    while (i <= secondNum) {
        if (i % 2 == 0)
            cout << i << " ";
        i++;
    }

    cout << endl << "Numbers and squares: ";
    i = 1;
    while (i <= 10) {
        cout << i << ":" << i * i << " ";
        i++;
    }

    int sum = 0;
    i = firstNum;
    while (i <= secondNum) {
        if (i % 2 == 1)
            sum += i * i;
        i++;
    }
    cout << endl << "Sum of squares: " << sum;

    cout << endl << "Uppercase letters: ";
    char c = 'A';
    while (c <= 'Z') {
        cout << c << " ";
        c++;
    }
    cout << endl;

    return 0;
}