Compilare: user.cpp: In function ‘int main()’: user.cpp:11:18: warning: unused variable ‘i’ [-Wunused-variable] long long n, i, j, s, t, d, k; ^ user.cpp:11:21: warning: unused variable ‘j’ [-Wunused-variable] long long n, i, j, s, t, d, k; ^ user.cpp:11:24: warning: unused variable ‘s’ [-Wunused-variable] long long n, i, j, s, t, d, k; ^ user.cpp:11:27: warning: unused variable ‘t’ [-Wunused-variable] long long n, i, j, s, t, d, k; ^ user.cpp:11:30: warning: unused variable ‘d’ [-Wunused-variable] long long n, i, j, s, t, d, k; ^ user.cpp:11:33: warning: unused variable ‘k’ [-Wunused-variable] long long n, i, j, s, t, d, k; ^ user.cpp:7:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("furnica.in","r",stdin); ^ user.cpp:8:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("furnica.out","w",stdout); ^ user.cpp:13:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%c",&x); ^ user.cpp:14:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld",&n); ^