Compilare: user.cpp: In function ‘void df(long int)’: user.cpp:19:13: warning: variable ‘dr’ set but not used [-Wunused-but-set-variable] long st,dr; ^ user.cpp: In function ‘int main()’: user.cpp:43:19: warning: format ‘%ld’ expects argument of type ‘long int*’, but argument 2 has type ‘long long int*’ [-Wformat=] scanf("%ld",&t); ^ user.cpp:44:33: warning: format ‘%ld’ expects argument of type ‘long int*’, but argument 2 has type ‘long long int*’ [-Wformat=] scanf("%ld%ld%ld",&n,&st,&dr); ^ user.cpp:44:33: warning: format ‘%ld’ expects argument of type ‘long int*’, but argument 3 has type ‘long long int*’ [-Wformat=] user.cpp:44:33: warning: format ‘%ld’ expects argument of type ‘long int*’, but argument 4 has type ‘long long int*’ [-Wformat=] user.cpp:52:30: warning: format ‘%ld’ expects argument of type ‘long int*’, but argument 2 has type ‘long long int*’ [-Wformat=] scanf("%ld",&v[j]); ^ user.cpp:42:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("summax.in","r",stdin); ^ user.cpp:43:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%ld",&t); ^ user.cpp:44:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%ld%ld%ld",&n,&st,&dr); ^ user.cpp:52:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%ld",&v[j]); ^