Compilare: main.cpp: In function 'std::vector<int> add(std::vector<int>, std::vector<int>)': main.cpp:16:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < max(a.size(), b.size()); i++) { ~~^~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:17:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] int aux = (i < a.size() ? a[i] : 0) + (i < b.size() ? b[i] : 0); ~~^~~~~~~~~~ main.cpp:17:46: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] int aux = (i < a.size() ? a[i] : 0) + (i < b.size() ? b[i] : 0); ~~^~~~~~~~~~ main.cpp: In function 'std::vector<int> scade(std::vector<int>, std::vector<int>)': main.cpp:25:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < max(a.size(), b.size()); i++) { ~~^~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:26:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] int aux = (i < a.size() ? a[i] : 0) - (i < b.size() ? b[i] : 0); ~~^~~~~~~~~~ main.cpp:26:46: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] int aux = (i < a.size() ? a[i] : 0) - (i < b.size() ? b[i] : 0); ~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:106:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < c.size(); i++) ~~^~~~~~~~~~