Compilare: user.c: In function ‘main’: user.c:73:10: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("ecuatii2.out", "w", stdout); ^ user.c:76:14: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] for (fscanf(f, "%d\n", &N); N; N--) { ^ user.c:77:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%s\n", s); ^ user.c: In function ‘read’: user.c:48:3: warning: ‘result’ may be used uninitialized in this function [-Wmaybe-uninitialized] return result * side; ^