Compilare: user.cpp: In member function ‘Huge Huge::operator+(int)’: user.cpp:76:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0; i < cifre.size(); i++) { ^ user.cpp: In member function ‘Huge Huge::operator+(Huge)’: user.cpp:92:56: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0; i < max(cifre.size(), B.cifre.size()); i++) { ^ user.cpp:93:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i >= cifre.size()) a = 0; ^ user.cpp:95:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i >= B.cifre.size()) b = 0; ^ user.cpp: In member function ‘Huge Huge::operator-(Huge)’: user.cpp:115:56: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0; i < max(cifre.size(), B.cifre.size()); i++) { ^ user.cpp:116:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i >= cifre.size()) a = 0; ^ user.cpp:118:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i >= B.cifre.size()) b = 0; ^ user.cpp: In member function ‘Huge Huge::operator*(int)’: user.cpp:138:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0; i < cifre.size(); i++) { ^ user.cpp: In function ‘int main()’: user.cpp:171:43: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen(inputFile.c_str(), "r", stdin); ^ user.cpp:172:45: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen(outputFile.c_str(), "w", stdout); ^ user.cpp:175:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &N); ^