CODEWITHSUNDEEP
c++
Andrew
Andrew

Reputation: 1575

How to determine whether number has digits in ascending order from right to left

I need to determine whether an entered number has digits in ascending order from right to left.

My code seems not working correctly

Here is my code:

int n, temp;
cout << "Please enter number: ";
cin >> n;
bool ascending = true;
temp = n%10;

while (n>0)
{
    n /= 10;
    if (temp < n % 10)
    {
        ascending = false;
    }
}

if (ascending)
{
    cout << "Number is ascending";
}
else {
    cout << "Number is not ascending";
}

Upvotes: 3

Views: 5083

Answers (2)

ChuckB
ChuckB

Reputation: 638

When I run the latest from Thirupathi, it does work. Note OP said ascending order RIGHT to LEFT.

Ex output runs:

./order
Please enter number: 5321
Number is ascending

./order
Please enter number: 2356
Number is not ascending

Upvotes: 1

Thirupathi Thangavel
Thirupathi Thangavel

Reputation: 2465

You're not updating the value of temp after every iteration

int n, temp;
cout << "Please enter number: ";
cin >> n;
bool ascending = true;
temp = n%10;

while (n / 10 > 0)
{
    n /= 10;
    if (temp > n % 10)
    {
        ascending = false;
        break;
    }
    temp = n % 10;
}

if (ascending)
{
    cout << "Number is ascending";
}
else {
    cout << "Number is not ascending";
}

Upvotes: 1

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