Compilare: user.c: In function ‘main’: user.c:99:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &n, &m); ^ user.c:101:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &e[i], &val[i]); ^ user.c:172:21: warning: ‘last’ may be used uninitialized in this function [-Wmaybe-uninitialized] sol[ans].a=l[last]; ^