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Tony is exploring functions and needs your help. Write a program to assist Tony where he inputs an integer N. The program should display the factors of N and count how many digits N has. Help him with the program using call-by-reference.Function Specifications:To display factors - void factors(int ); To display digits - int count_digits(int *);Input format :The input consists of an integer N.Output format :The first line of output prints "Factors: " followed by the factors of N, separated by a space.The second line of output prints "Total digits: " followed by the total digits of N.

Question

Tony is exploring functions and needs your help. Write a program to assist Tony where he inputs an integer N. The program should display the factors of N and count how many digits N has. Help him with the program using call-by-reference.Function Specifications:To display factors - void factors(int ); To display digits - int count_digits(int *);Input format :The input consists of an integer N.Output format :The first line of output prints "Factors: " followed by the factors of N, separated by a space.The second line of output prints "Total digits: " followed by the total digits of N.

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Solution

Here is a simple C++ program that meets your requirements:

#include <iostream>
using namespace std;

void factors(int n) {
    cout << "Factors: ";
    for(int i = 1; i <= n; ++i) {
        if(n % i == 0)
            cout << i << " ";
    }
    cout << endl;
}

int count_digits(int *n) {
    int count = 0;
    while(*n != 0) {
        *n = *n / 10;
        ++count;
    }
    return count;
}

int main() {
    int N;
    cout << "Enter a number: ";
    cin >> N;
    factors(N);
    int N_copy = N; // Copy of N for count_digits function
    cout << "Total digits: " << count_digits(&N_copy) << endl;
    return 0;
}

This program first asks the user to input a number. It then calls the factors function to print out all the factors of the number. After that, it calls the count_digits function to count the number of digits in the number. The count_digits function uses a pointer to the number so that it can modify the number as it counts the digits.

This problem has been solved

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