Compilare: user.cpp: In function ‘int main()’: user.cpp:5:17: warning: unused variable ‘p’ [-Wunused-variable] int n,m,i,j,k,l,p,q,x; ^ user.cpp:5:19: warning: unused variable ‘q’ [-Wunused-variable] int n,m,i,j,k,l,p,q,x; ^ user.cpp:5:21: warning: unused variable ‘x’ [-Wunused-variable] int n,m,i,j,k,l,p,q,x; ^ user.cpp:3:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] {freopen("bilete.in","r",stdin); ^ user.cpp:4:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("bilete.out","w",stdout); ^ user.cpp:6:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^