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Steve Bradford
Steve Bradford, Computer Software Engineer
Category: Programming
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Experience:  B.S. in Computer Science. Years of software and database development in several languages.
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Write a program using While Loop using C++

Customer Question

Write a program that uses while loops to perform the following steps: 1. prompt the user to enter 2 integers firstNUm and secondNum (firstNum must be less than secondNum).

2. Output all odd numbers between firstNum and secondNum.

3. Output the sum of all even numbers between firstNum and secondNum.

4. Output the numbers and their squares between 1 and 10.

5. Output the sum of the square of the odd numbers between firstNum and secondNum.

6. Output all uppercase letters.

Submitted: 5 years ago.
Category: Programming
Expert:  Steve Bradford replied 5 years ago.

Here you go I treated between as inclusive. Thanks.

#include "conio.h"

#include

#include

using namespace std;

int main()

{

int firstnum, secondnum;

firstnum = 0;

secondnum = 0;

while (firstnum >= secondnum) //get the first and second number until they are correct

{

cout << "PLEASE ENTER THE FIRST NUMBER: ";

cin >> firstnum;

cout << endl << "PLEASE ENTER THE SECOND NUMBER:";

cin >> secondnum;

cout << endl;

if (firstnum >= secondnum)

{

cout << "THE FIRST NUMBER MUST BE LESS THAN THE SECOND NUMBER. PLEASE TRY AGAIN." << endl << endl;

}

}

int i = firstnum;

int evensum = 0;

int oddsum = 0;

cout << endl << "ODD NUMBERS BETWEEN " << firstnum << " AND " << secondnum << endl;

while (i <= secondnum)

{

if (i%2 == 0) //even, take sum

{

evensum += i;

}

else //odd,

{

cout << i << endl;

oddsum += i;

}

i++;

}

cout << endl << "SUM OF EVEN NUMBERS BETWEEN " << firstnum << " AND " << secondnum << ": ";

cout << evensum << endl;

i = firstnum;

cout << endl << "THE SQUARES OF THE NUMBERS BETWEEN 1 AND 10: " << endl; // I am assuming this is the numbers between 1 and 10 and firstnumber and second number

while (i <= secondnum)

{

if (i<=10)

{

cout << i << ": " << (i * i) << endl;

}

i++;

}

cout << endl << "SUM OF ODD NUMBERS BETWEEN " << firstnum << " AND " << secondnum << ": ";

cout << oddsum << endl << endl;

cout << "PRESS ANY KEY TO EXIT...";

_getch();

return 0;

}

Customer: replied 5 years ago.
Hi Steve I noticed at the top of the code you have #include "conio.h" Can I delete this or is it needed for this progra,m because I never seen that before and my professor will question that. Also what is the -getch(); That has to do with the uppercase letters? PLease let me know. Thank you.
Expert:  Steve Bradford replied 5 years ago.
The conio.h is the library for the _getch function. I just used it for the "PRESS ANY KEY TO EXIT..." ability so you could see the output before the window closes. If you run it without that the program will run and exit (closing the console window) without you being able to see the results.

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Steve Bradford
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