Compilare: user.cpp: In function ‘int main()’: user.cpp:16:16: warning: format ‘%d’ expects argument of type ‘int*’, but argument 2 has type ‘int’ [-Wformat=] scanf("%d",n); ^ user.cpp:19:22: warning: format ‘%d’ expects argument of type ‘int*’, but argument 2 has type ‘int’ [-Wformat=] scanf("%d",a[i]); ^ user.cpp:15:21: warning: unused variable ‘count’ [-Wunused-variable] int xmax=200005,count=1,x1=1,n,x2,i,nr_cur=0; ^ user.cpp:15:29: warning: unused variable ‘x1’ [-Wunused-variable] int xmax=200005,count=1,x1=1,n,x2,i,nr_cur=0; ^ user.cpp:15:36: warning: unused variable ‘x2’ [-Wunused-variable] int xmax=200005,count=1,x1=1,n,x2,i,nr_cur=0; ^ user.cpp:14:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("invsc.in","r",stdin); ^ user.cpp:16:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",n); ^ user.cpp:19:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",a[i]); ^ user.cpp:16:17: warning: ‘n’ is used uninitialized in this function [-Wuninitialized] scanf("%d",n); ^