Compilare: user.cpp: In function ‘int main()’: user.cpp:19:15: warning: unused variable ‘j’ [-Wunused-variable] int n, i, j, s, p, t, d, k, ma, id, st, dr, begi, endi; ^ user.cpp:19:18: warning: unused variable ‘s’ [-Wunused-variable] int n, i, j, s, p, t, d, k, ma, id, st, dr, begi, endi; ^ user.cpp:19:21: warning: unused variable ‘p’ [-Wunused-variable] int n, i, j, s, p, t, d, k, ma, id, st, dr, begi, endi; ^ user.cpp:19:24: warning: unused variable ‘t’ [-Wunused-variable] int n, i, j, s, p, t, d, k, ma, id, st, dr, begi, endi; ^ user.cpp:19:27: warning: unused variable ‘d’ [-Wunused-variable] int n, i, j, s, p, t, d, k, ma, id, st, dr, begi, endi; ^ user.cpp:16:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("secventa.in","r",stdin); ^ user.cpp:17:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("secventa.out","w",stdout); ^