# Introduction to Functions (part 2)

**22 minutes**of video content.

#### Activity: Compute the number of odd digits presenting within an integer value

Graded Playground Autograder

**Activity Prompt:**

In this problem, you are going to declare and define a function using standard C++ conventions. You will write a declaration for the function in the header file and provide the function's definition in the corresponding source file.

The signature of the function that you are responsible for is `NoOddDigitsInInt(int number)`

and its return type is `int`

. Your implementation of `NoOddDigitsInInt(int number)`

will use a combination of the modulo operator and division to peel off the digits comprising `number`

, counting the number of odd digits. Your function will then return the number of odd digits comprising `number`

. For example, if `number`

is initialized with `1012`

, your function should return `2`

since there are two odd digits presenting within it.