Compilare: user.cpp: In function ‘int main()’: user.cpp:54:13: warning: unused variable ‘poz’ [-Wunused-variable] int n,i,poz,k1,k2; ^ user.cpp:57:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&n); ^ user.cpp:59:45: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%lf%lf",&v[i].x,&v[i].y); ^