Compilare: user.cpp: In member function ‘void HugeNumber::operator+=(const HugeNumber&)’: user.cpp:41:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 1; i <= num[0] || i <= rhs.num[0] || t; ++i, t /= 10) ^ user.cpp:41:49: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 1; i <= num[0] || i <= rhs.num[0] || t; ++i, t /= 10) ^ user.cpp:42:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] num[i] = (t += ((i <= num[0]) ? (num[i]) : (0)) + ((i <= rhs.num[0]) ? (rhs.num[i]) : (0))) % 10; ^ user.cpp:42:79: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] num[i] = (t += ((i <= num[0]) ? (num[i]) : (0)) + ((i <= rhs.num[0]) ? (rhs.num[i]) : (0))) % 10; ^