Compilare: user.cpp: In function ‘int main()’: user.cpp:49:23: warning: unused variable ‘elem’ [-Wunused-variable] int n,m,k,i,j,cer,elem,nr=0,min=2000000000,dmax,dy,dx,ax,ay,bx,by,sldt,num; ^ user.cpp:49:59: warning: variable ‘ax’ set but not used [-Wunused-but-set-variable] int n,m,k,i,j,cer,elem,nr=0,min=2000000000,dmax,dy,dx,ax,ay,bx,by,sldt,num; ^ user.cpp:49:62: warning: variable ‘ay’ set but not used [-Wunused-but-set-variable] int n,m,k,i,j,cer,elem,nr=0,min=2000000000,dmax,dy,dx,ax,ay,bx,by,sldt,num; ^ user.cpp:49:65: warning: variable ‘bx’ set but not used [-Wunused-but-set-variable] int n,m,k,i,j,cer,elem,nr=0,min=2000000000,dmax,dy,dx,ax,ay,bx,by,sldt,num; ^ user.cpp:49:68: warning: variable ‘by’ set but not used [-Wunused-but-set-variable] int n,m,k,i,j,cer,elem,nr=0,min=2000000000,dmax,dy,dx,ax,ay,bx,by,sldt,num; ^ user.cpp: In function ‘void read(int&)’: user.cpp:33:38: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buffer,1,DIM,stdin); ^ user.cpp:41:38: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buffer,1,DIM,stdin); ^ user.cpp: In function ‘int main()’: user.cpp:47:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("rascoala.in","r",stdin); ^ user.cpp:48:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("rascoala.out","w",stdout); ^ user.cpp:50:30: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buffer,1,DIM,stdin); ^