Compilare: user.cpp: In function ‘int main()’: user.cpp:102:10: warning: unused variable ‘st1’ [-Wunused-variable] long st1,dr1,st2,dr2,q=0; ^ user.cpp:102:14: warning: unused variable ‘dr1’ [-Wunused-variable] long st1,dr1,st2,dr2,q=0; ^ user.cpp:102:18: warning: unused variable ‘st2’ [-Wunused-variable] long st1,dr1,st2,dr2,q=0; ^ user.cpp:102:22: warning: unused variable ‘dr2’ [-Wunused-variable] long st1,dr1,st2,dr2,q=0; ^ user.cpp:95:39: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1,"%ld%ld%ld",&test,&n,&k); ^ user.cpp:98:100: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1,"%ld%ld%ld%ld%ld%ld",&v[i].a.x,&v[i].a.y,&v[i].b.x,&v[i].b.y,&v[i].c.x,&v[i].c.y); ^