Eroare de compilare: main.cpp: In function 'void back(int)': main.cpp:63:4: error: 'number' was not declared in this scope number++; ^~~~~~ main.cpp:65:5: error: 'cout' was not declared in this scope cout << l[i] << c[i]; ^~~~ main.cpp:66:4: error: 'cout' was not declared in this scope cout << '\n'; ^~~~ main.cpp:32:7: warning: unused variable 'nr1' [-Wunused-variable] int nr1 = 0; ^~~ main.cpp:33:7: warning: unused variable 'nr2' [-Wunused-variable] int nr2 = 0; ^~~ main.cpp:35:8: warning: unused variable 'ok1' [-Wunused-variable] bool ok1 = 1; ^~~ main.cpp: At global scope: main.cpp:79:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type] main() ^ main.cpp: In function 'int main()': main.cpp:81:2: error: 'cin' was not declared in this scope cin >> n >> k; ^~~ Non zero exit status: 1