Compilare: main.cpp: In function 'int main()': main.cpp:69:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int z = 0; z < q.size(); z++) ~~^~~~~~~~~~ main.cpp:75:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int ze = 0; ze < q.size(); ze++) ~~~^~~~~~~~~~ main.cpp:58:7: warning: 'ansc' may be used uninitialized in this function [-Wmaybe-uninitialized] char ansc; ^~~~