Compilare: user.cpp: In function ‘void Update(int)’: user.cpp:20:9: warning: unused variable ‘i’ [-Wunused-variable] int i,j,n=sz[wh]; ^ user.cpp:20:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j,n=sz[wh]; ^ user.cpp:20:13: warning: unused variable ‘n’ [-Wunused-variable] int i,j,n=sz[wh]; ^ user.cpp: In function ‘void Query(int, int, int)’: user.cpp:40:19: warning: unused variable ‘n’ [-Wunused-variable] int i,j,p1,p2,n; ^ user.cpp: In function ‘int main()’: user.cpp:61:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("mess.in","r",stdin); ^ user.cpp:62:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("mess.out","w",stdout); ^ user.cpp:63:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&N,&M); ^ user.cpp:65:46: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&aa[i]),ind[i]=i,este[i]=1; ^ user.cpp:91:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&tip); ^ user.cpp:93:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&x); ^ user.cpp:97:37: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&x,&y,&k); ^ user.cpp:52:5: warning: ‘p2’ may be used uninitialized in this function [-Wmaybe-uninitialized] for(j=p1; j<p2; ++j) // j<n-1 ^ user.cpp:40:16: note: ‘p2’ was declared here int i,j,p1,p2,n; ^ user.cpp:40:13: warning: ‘p1’ may be used uninitialized in this function [-Wmaybe-uninitialized] int i,j,p1,p2,n; ^