119: Write a program that takes two integers as input and determines if their product is positive, negative, or zero. If it's negative, check if it's divisible by 9. If it's divisible by 9, display a message stating both conditions are satisfied. Make this program using user defined functions.

 

// Write a program that takes two integers as inputand determines if their product is positive,negative, or zero.
// If it's negative, check if it'sdivisible by 9.
// If it's divisible by 9, display amessage stating both conditions are satisfied

#include <iostream>
using namespace std;
int inum(string x);
int product(int x, int y);
bool isDivby9(int x);

int main()
{
    int num1 = inum("Enter first number: "),
        num2 = inum("Enter second number: ");

    if (product(num1, num2) >= 0)
    {
        cout << "Product of " << num1 << " and " << num2 << " is: " << product(num1, num2) << endl;
    }
    else if (product(num1, num2) < 0)
    {
        cout << "Product of " << num1 << " and " << num2 << " is: " << product(num1, num2) << endl;
        if (isDivby9(product(num1, num2)))
        {
            cout << "Product of " << num1 << " and " << num2 << " divisible by 9\n";
            cout << "Both conditions are satisfied\n";
        }
        else
        {
            cout << "Product of " << num1 << " and " << num2 << " is not divisible by 9\n";
        }
    }

    return 0;
}

int inum(string x)
{
    int y;
    cout << x;
    cin >> y;
    return y;
}
int product(int x, int y)
{
    return x * y;
}
bool isDivby9(int x)
{
    return (x % 9 == 0);
}


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