Compilare: user.cpp: In function ‘int main()’: user.cpp:17:15: warning: unused variable ‘j’ [-Wunused-variable] int n, i, j, s, t, d, k, ma; ^ user.cpp:17:18: warning: unused variable ‘s’ [-Wunused-variable] int n, i, j, s, t, d, k, ma; ^ user.cpp:17:21: warning: unused variable ‘t’ [-Wunused-variable] int n, i, j, s, t, d, k, ma; ^ user.cpp:17:27: warning: unused variable ‘k’ [-Wunused-variable] int n, i, j, s, t, d, k, ma; ^ user.cpp:17:30: warning: unused variable ‘ma’ [-Wunused-variable] int n, i, j, s, t, d, k, ma; ^ user.cpp:13:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("restante.in","r",stdin); ^ user.cpp:14:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("restante.out","w",stdout); ^ user.cpp:21:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%*c",&n); ^ user.cpp:23:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s",q); ^