Compilare: user.cpp: In function ‘void do_ciur()’: user.cpp:26:10: warning: variable ‘t’ set but not used [-Wunused-but-set-variable] long t; ^ user.cpp: In function ‘int main()’: user.cpp:48:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("sumdiv2.in","r",stdin); ^ user.cpp:49:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("sumdiv2.out","w",stdout); ^ user.cpp:51:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%ld\n",&q); ^ user.cpp:54:45: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%ld %ld\n",&qu[i].a,&qu[i].b); ^ user.cpp:72:18: warning: ‘div’ may be used uninitialized in this function [-Wmaybe-uninitialized] while (n % div == 0) { n /= div; put++; } ^