Compilare: user.c: In function ‘main’: user.c:49:7: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result [-Wunused-result] fgets(A, sizeof(A), fin); ^ user.c:50:7: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result [-Wunused-result] fgets(B, sizeof(B), fin); ^