23 c++ questions

c++ questions

1. Using vectors or arrays, write a function named word_rev() that reverse any given word.
2. Write a program that will:

Ask the user to enter a word.
Save the entry as word_entered.
Call word_rev on the entry
Display the reversed entry (word_entered)

3. Write a function named prime() that determine whether or not a given number n (greater than
one) is prime. The algorithm:

If n is even then n is not a prime number except n = 2
For all odd numbers less or equal to the square root of n, if any of them divide n, then

n is not prime
4. Write a program that:

Asks the user to enter an integer
Saves the entry as var
Calls the function prime() on the entry
Displays whether or not the entry is prime

5. Write a function named eratos() that find all the prime number less than a given number, its
argument n
6. Write a program that:

Asks the user to enter an integer
Saves the entry as bound
Passes bound onto eratos()
Displays all the prime numbers less or equal to bound

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