Xoractive.cpp: In function 'void kout()':
Xoractive.cpp:4:15: error: 'cerr' was not declared in this scope
4 | void kout() { cerr << endl; }
| ^~~~
Xoractive.cpp:2:1: note: 'std::cerr' is defined in header '<iostream>'; did you forget to '#include <iostream>'?
1 | #include "interactive.h"
+++ |+#include <iostream>
2 | using namespace std;
Xoractive.cpp:4:23: error: 'endl' was not declared in this scope
4 | void kout() { cerr << endl; }
| ^~~~
Xoractive.cpp:2:1: note: 'std::endl' is defined in header '<ostream>'; did you forget to '#include <ostream>'?
1 | #include "interactive.h"
+++ |+#include <ostream>
2 | using namespace std;
Xoractive.cpp: In function 'void kout(T, U ...)':
Xoractive.cpp:5:57: error: 'cerr' was not declared in this scope
5 | template <class T, class ...U> void kout(T a, U ...b) { cerr << a << ' ',kout(b...); }
| ^~~~
Xoractive.cpp:5:57: note: 'std::cerr' is defined in header '<iostream>'; did you forget to '#include <iostream>'?
Xoractive.cpp: In function 'void pary(T, T)':
Xoractive.cpp:6:57: error: 'cerr' was not declared in this scope
6 | template <class T> void pary(T L, T R) { while (L != R) cerr << *L << " \n"[++L==R]; }
| ^~~~
Xoractive.cpp:6:57: note: 'std::cerr' is defined in header '<iostream>'; did you forget to '#include <iostream>'?