Compilare: main.cpp: In function 'bool apartine(int)': main.cpp:23:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (val[p] == x) ~~~~~~~^~~~ main.cpp: In function 'void sterge(int)': main.cpp:46:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (p != 0 && val[p] != x) ~~~~~~~^~~~ main.cpp: In function 'int main()': main.cpp:67:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<moment.length(); i++) ~^~~~~~~~~~~~~~~~ main.cpp:82:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=l; i<initial.length(); i++) ~^~~~~~~~~~~~~~~~~