Compilare: main.cpp: In function 'std::vector<int> addNumbers(std::vector<int>, std::vector<int>)': main.cpp:69:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] int fValue = i >= firstN.size() ? 0 : firstN[i]; ~~^~~~~~~~~~~~~~~~ main.cpp:70:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] int sValue = i >= secondN.size() ? 0 : secondN[i]; ~~^~~~~~~~~~~~~~~~~ main.cpp: In function 'void subtractNumbers(int, int)': main.cpp:83:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( int i = 0; i < v[resultIndex].size() && i < v[pIndex].size(); i++) { ~~^~~~~~~~~~~~~~~~~~~~~~~ main.cpp:83:50: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( int i = 0; i < v[resultIndex].size() && i < v[pIndex].size(); i++) { ~~^~~~~~~~~~~~~~~~~~ main.cpp:88:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (k < v[resultIndex].size() && v[resultIndex][k] ==0) k++; ~~^~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'std::vector<int> square(std::vector<int>)': main.cpp:104:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < number.size(); i++) { ~~^~~~~~~~~~~~~~~ main.cpp:110:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j = 0; j < number.size();j++) { ~~^~~~~~~~~~~~~~~ main.cpp:120:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < number.size(); i++) { ~~^~~~~~~~~~~~~~~