Eroare de compilare: main.cpp:8:1: error: expected ',' or ';' before 'stack' 8 | stack<char> cifre; | ^~~~~ main.cpp: In function 'int main()': main.cpp:15:16: error: 'cifre' was not declared in this scope 15 | while (cifre.empty() == 0 and cifre.top() < numar[index] and k > 0) { | ^~~~~ main.cpp:19:9: error: 'cifre' was not declared in this scope 19 | cifre.push(numar[index]); | ^~~~~ main.cpp:21:12: error: 'cifre' was not declared in this scope 21 | while (cifre.empty() == 0 and k > 0) { | ^~~~~ main.cpp:25:12: error: 'cifre' was not declared in this scope 25 | while (cifre.empty() == 0) { | ^~~~~ Non zero exit status: 1