increment adds +2 instead of 1

Projects Programming
1

i have an integer set to 0, inside of an interrupt i have the integer increment by 1 (num++; the integer is named num). then i output the integer to the serial monitor is shows 0 but when i press the button it goes up by 2 instead of 1. please help me

2

Help you with what?

3

bradleys:
i have an integer set to 0, inside of an interrupt i have the integer increment by 1 (num++; the integer is named num). then i output the integer to the serial monitor is shows 0 but when i press the button it goes up by 2 instead of 1. please help me

Is the input debounced ?
Have you got a pullup or pulldown resistor in place on the input ?

4

bradleys:
please help me

Certainly. Read this. You will find lots of good advice there.

5

UKHeliBob:
Is the input debounced ?
Have you got a pullup or pulldown resistor in place on the input ?

neither of these seemed to work. they skipped all of the if statements

6

It's time for you to post the code that causes the problem