Compilare: user.cpp: In member function ‘HugeN& HugeN::operator+(const HugeN&)’: user.cpp:62:19: warning: statement has no effect [-Wunused-value] temp.x[temp.x[0]]; ^ user.cpp:49:11: warning: reference to local variable ‘temp’ returned [-Wreturn-local-addr] HugeN temp; ^ user.cpp: In member function ‘HugeN& HugeN::operator-(const HugeN&)’: user.cpp:68:15: warning: reference to local variable ‘temp’ returned [-Wreturn-local-addr] HugeN temp; ^ user.cpp: In member function ‘int& HugeN::operator%(int)’: user.cpp:92:9: warning: reference to local variable ‘r’ returned [-Wreturn-local-addr] int i,r=0; ^ user.cpp: In function ‘int main()’: user.cpp:108:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("next.in","r",stdin); ^ user.cpp:109:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("next.out","w",stdout); ^ user.cpp:111:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&a); ^ user.cpp:112:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&d); ^ user.cpp:115:10: warning: ‘r’ is used uninitialized in this function [-Wuninitialized] m=n%d; ^