Compilare: user.cpp: In function ‘int main()’: user.cpp:14:27: warning: unused variable ‘l’ [-Wunused-variable] int n,p,k,d,r,x,y,i,m,l,j,h,s; ^ user.cpp:14:31: warning: unused variable ‘h’ [-Wunused-variable] int n,p,k,d,r,x,y,i,m,l,j,h,s; ^ user.cpp:15:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d%d%d",&p,&n,&k,&d); ^ user.cpp:25:60: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for (i=1;i<=k;i++) fscanf(f,"%d%d",&v[i].a,&v[i].b); ^ user.cpp:26:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&m); ^ user.cpp:29:35: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d",&x,&y); ^