Compilare: user.c: In function ‘main’: user.c:6:32: warning: unused variable ‘stop’ [-Wunused-variable] int n, i, r, nr, s, start, stop, k, co; ^ user.c:6:25: warning: unused variable ‘start’ [-Wunused-variable] int n, i, r, nr, s, start, stop, k, co; ^ user.c:9:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d%d", &n, &k ); ^ user.c:13:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d", &nr ); ^