Compilare: user.cpp: In member function ‘Huge Huge::operator+=(int)’: user.cpp:84:21: warning: left operand of comma operator has no effect [-Wunused-value] for (i=1, t=k; t!=0, i<=x[0]; i++) ^ user.cpp: In function ‘int main()’: user.cpp:56:31: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen (filein,"r",stdin); ^ user.cpp:57:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen (fileout,"w",stdout); ^ user.cpp:58:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n",&T); ^ user.cpp:61:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s\n",s); ^