Compilare: user.cpp: In function ‘int main()’: user.cpp:13:9: warning: unused variable ‘ma’ [-Wunused-variable] int ma,mi,q,a,b,m,n,ci,co; ^ user.cpp:13:12: warning: unused variable ‘mi’ [-Wunused-variable] int ma,mi,q,a,b,m,n,ci,co; ^ user.cpp:13:15: warning: unused variable ‘q’ [-Wunused-variable] int ma,mi,q,a,b,m,n,ci,co; ^ user.cpp:13:17: warning: unused variable ‘a’ [-Wunused-variable] int ma,mi,q,a,b,m,n,ci,co; ^ user.cpp:13:19: warning: unused variable ‘b’ [-Wunused-variable] int ma,mi,q,a,b,m,n,ci,co; ^ user.cpp:13:23: warning: unused variable ‘n’ [-Wunused-variable] int ma,mi,q,a,b,m,n,ci,co; ^ user.cpp:13:25: warning: unused variable ‘ci’ [-Wunused-variable] int ma,mi,q,a,b,m,n,ci,co; ^ user.cpp:13:28: warning: unused variable ‘co’ [-Wunused-variable] int ma,mi,q,a,b,m,n,ci,co; ^ user.cpp:14:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("granita.in","r",stdin); ^ user.cpp:15:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("granita.out","w",stdout); ^ user.cpp:16:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d ",&m); ^ user.cpp:19:42: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d ",&pr[i].l,&pr[i].c); ^