Compilare: main.cpp: In function 'int main()': main.cpp:27:23: warning: unused variable 'dmax' [-Wunused-variable] int i,p1,p2,p3,p4,dmax,j,xsol; ^~~~ main.cpp:27:28: warning: unused variable 'j' [-Wunused-variable] int i,p1,p2,p3,p4,dmax,j,xsol; ^ main.cpp:29:25: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d",&n); ^ main.cpp:31:44: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d%d",&v[i].x,&v[i].y); ^