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c++numbersdigits

How to separate digits from a number in C++?

I'm trying to find a way to get 5 digits separately from a whole number.

cin >> option;      // Option to enter a number(don't worry about this)
if (option == 1)    // The option(don't worry)
{
    cout << " enter 5 digit key 0 to 9 \n";
    readin(key);    // The input number that needs the digits to be separated
}

The code above just inputs the number, but I want to separate the digits somehow...But how?

Solution

  • something like this:

    // handle negative values
key = ABS(key);

while(key > 0)
{
    // get the digit in the one's place (example: 12345 % 10 is 5)
    int digit = key % 10;

    // remove the digit in the one's place
    key /= 10;
}