Compilare: main.cpp: In function 'int binary(std::vector<int>&, int)': main.cpp:7:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (; step < v.size(); step <<= 1); ~~~~~^~~~~~~~~~ main.cpp:9:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (i + step < v.size() && v[i+step] <= sought) { ~~~~~~~~~^~~~~~~~~~ main.cpp: In function 'void push(std::vector<int>&, int)': main.cpp:21:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (; i < v.size() && v[i] < val; i++); ~~^~~~~~~~~~