Compilare: main.cpp: In function 'int folder()': main.cpp:16:34: warning: NULL used in arithmetic [-Wpointer-arith] 16 | while(s[i] != ')' && s[i] != NULL) | ^~~~ main.cpp:33:30: warning: converting to non-pointer type 'char' from NULL [-Wconversion-null] 33 | cale[--s_cale] = NULL; // ultimul '\' | ^~~~ main.cpp:36:34: warning: converting to non-pointer type 'char' from NULL [-Wconversion-null] 36 | cale[--s_cale] = NULL; | ^~~~ main.cpp:42:56: warning: NULL used in arithmetic [-Wpointer-arith] 42 | while(s[i] != ',' && s[i] != ')' &&s[i] != NULL) | ^~~~ main.cpp:58:1: warning: no return statement in function returning non-void [-Wreturn-type] 58 | } | ^