Compilare: main.cpp: In function 'int main()': main.cpp:53:36: warning: suggest parentheses around '&&' within '||' [-Wparentheses] if(v[i].x < o.x || v[i].x == o.x && v[i].y < o.y) { ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~ main.cpp:45:21: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d",&n); ^ main.cpp:51:40: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%lf %lf",&v[i].x,&v[i].y); ^