Compilare: user.c: In function ‘main’: user.c:91:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf( fin , "%d%d" , &n , &m ); ^ user.c:94:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf( fin , "%d%d%d" , &x , &y1 , &y2 ); ^ user.c:108:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf( fin , "%d%d%d" , &x , &y , &r ); ^