Compilare: user.cpp: In member function ‘void Huge::operator+=(int)’: user.cpp:69:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0; i < cifre.size(); i++) { ^ user.cpp: In member function ‘void Huge::operator+=(Huge)’: user.cpp:83:56: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0; i < min(cifre.size(), B.cifre.size()); i++) { ^ user.cpp:85:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i >= B.cifre.size()) b = 0; ^ user.cpp:91:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(; i < B.cifre.size(); i++) { ^ user.cpp: In function ‘int main()’: user.cpp:122:43: 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:123:45: 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:126:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &N, &K); ^ user.cpp:129:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &x); ^