Compilare: user.cpp: In function ‘void toV(lint*, lint)’: user.cpp:56:24: warning: argument to ‘sizeof’ in ‘void* memset(void*, int, size_t)’ call is the same expression as the destination; did you mean to dereference it? [-Wsizeof-pointer-memaccess] memset(a, 0, sizeof(a)); ^ user.cpp: In function ‘void readFile()’: user.cpp:38:44: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%lld%lld%lld", &a, &b, &MOD); ^