Eroare de compilare: user.c: In function ‘main’: user.c:65:27: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘low’ unsigned long long it low = 0; ^ user.c:65:27: error: ‘low’ undeclared (first use in this function) user.c:65:27: note: each undeclared identifier is reported only once for each function it appears in user.c:30:5: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%llu", &N); ^