Compilare: user.cpp: In function ‘int main()’: user.cpp:28:14: warning: unused variable ‘rez’ [-Wunused-variable] long rez=0; ^ user.cpp:12:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("fractii2.in","r",stdin); ^ user.cpp:14:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%ld%ld",&t,&n); ^