Who can fix this code?

Question

https://code.sololearn.com/c4GSCE17isHW/?ref=app

Answer 1

line no:14 just write
queue(int size); //not queue(int size=size);

Enclose \n in quotes like "\n" or instead write endl;

Use exit(0); inplace of exit(failure); failure in undeclared.

And

line 72: declare q . So write like
queue q = queue(5);