Compilare: main.c: In function 'main': main.c:25:19: warning: too many arguments for format [-Wformat-extra-args] fscanf(in,"%lf", &vec[i].x ,&vec[i].y); ^~~~~ main.c:21:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d", &N); ^~~~~~~~~~~~~~~~~~~ main.c:25:9: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%lf", &vec[i].x ,&vec[i].y); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~