Compilare: user.cpp: In function ‘int main()’: user.cpp:31:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d",&n,&m); ^ user.cpp:33:43: 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); ^ user.cpp:40:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d",&q.x,&q.y); ^ user.cpp:39:26: warning: ‘poz’ may be used uninitialized in this function [-Wmaybe-uninitialized] punct q,aux; int poz; ^