Compilare: user.c: In function ‘main’: user.c:43:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d %d %d %d %d %d %d", &N, &M, &A, &B, &C, &D, &E); ^ user.c:59:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &x); ^ user.c:66:10: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("muzica.out", "w", stdout); ^