i am getting a redefinition error when i write exactly this code.Why?

Question

redefinition class error

Answer 1

which programming language

Answer 2

post the code

Answer 3

Nurullah Kuş thats the include guard i was talking about, it prevents stuff from being included multiple times in indirect ways and therefore prevents redefinition errors

Answer 4

Nurullah Kuş seems to work

Answer 5

works for me

Answer 6

did you use include guards?

Answer 7

for your header files? or what header files did you make?

Answer 8

can you post the content of each file?or post a screenshot somwhere and link it

Answer 9

and you included the one for birthday in the one for person and included both in the main file?

Answer 10

Nurullah Kuş there don‘t seem to be include guards, https://en.m.wikipedia.org/wiki/Include_guard
try adding them
you might also need to use:
using namespace std;
in Person.h

Answer 11

this works for me: https://code.sololearn.com/c7Scwo6d56v7/?ref=app

Answer 12

https://code.sololearn.com/cOrP2BbgJj4r/?ref=app

Answer 13

i made two different header files and one cpp file in dev c++

Answer 14

wrote same code exactly to dev c++

Answer 15

yes i did

Answer 16

i did two different header file for Birthday and person

Answer 17

yes added both in main,gonna send the photo now

Answer 18

https://code.sololearn.com/cbBd9RrpSRTg/?ref=app

Answer 19

couldnt upload photo but i write exactly like this,check inside code i added header file like this

Answer 20

first one Birthday class second one Person class and last one main cpp,