why this code show errors

Question

please tell me how to fix this error

https://code.sololearn.com/cfzDU00C380d/?ref=app

Answer 1

you redeclare the variables x y z
in line 6 erase the codes on line
6,8 and 13
then in the main function write the code

cout<<average(2,3,7);

then your code will be fine
here is the correct code
https://code.sololearn.com/c32ZHTbZSWJ1/?ref=app

Answer 2

You alerdy declared x,y,z as parameter so you can't redeclare it inside the func
also use:

cout<<average(x,y,z);
instead of int average(x,y,z);

Answer 3

Erase line number 6 .. There is a multiple declaration of x,y,z variables

write.
cout << average (2,3,7)

Answer 4

https://code.sololearn.com/cYeyDKtay1P2/?ref=app

Made some edits here , its working now.
outputs : the average is 3.

Answer 5

delete int x,y,z;
and int before function
avrage(2,3,7)