Compilare: main.cpp: In function 'int numar(int)': main.cpp:16:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < exp_d[p].size(); i++) { ~~^~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:33:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < expresie.size(); i++) { ~~^~~~~~~~~~~~~~~~~ main.cpp:39:9: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (i == expresie.size() - 1) exp_d.push_back(temp); ~~^~~~~~~~~~~~~~~~~~~~~~ main.cpp:43:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < exp_d.size(); i++) { ~~^~~~~~~~~~~~~~