Compilare: user.cpp: In function ‘int main()’: user.cpp:10:49: warning: unused variable ‘k’ [-Wunused-variable] int i,j,x,y,conex=0,ok=0,maxi,nr,lg,fiu,n,m,k,viz[nmax],maxim=0; ^ user.cpp:13:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&n,&m); ^ user.cpp:16:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&x,&y); ^