Compilare: main.cpp: In function 'char* find_nume_folder(char*, int)': main.cpp:119:39: warning: converting to non-pointer type 'char' from NULL [-Wconversion-null] nume_folder[poz_folder] = NULL; ^~~~ main.cpp: In function 'char* find_nume_fisier(char*, int)': main.cpp:138:32: warning: converting to non-pointer type 'char' from NULL [-Wconversion-null] nume_fisier[poz_curenta] = NULL; ^~~~