Compilare: user.c: In function ‘ciur’: user.c:12:6: warning: operation on ‘nr’ may be undefined [-Wsequence-point] x[++nr] = x[nr - 1] + 1; ^ user.c:17:6: warning: operation on ‘nr’ may be undefined [-Wsequence-point] x[++nr] = x[nr - 1]; ^ user.c: In function ‘main’: user.c:29:8: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%ld%ld", &N, &Q); ^ user.c:35:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%ld%ld", &a, &b); ^