Compilare: user.cpp: In function ‘int main()’: user.cpp:28:21: warning: unused variable ‘t’ [-Wunused-variable] int n, i, j, s, t, d, k, ma; ^ user.cpp:28:24: warning: unused variable ‘d’ [-Wunused-variable] int n, i, j, s, t, d, k, ma; ^ user.cpp:28:27: warning: unused variable ‘k’ [-Wunused-variable] int n, i, j, s, t, d, k, ma; ^ user.cpp:28:30: warning: unused variable ‘ma’ [-Wunused-variable] int n, i, j, s, t, d, k, ma; ^ user.cpp:25:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("bete2.in","r",stdin); ^ user.cpp:26:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("bete2.out","w",stdout); ^ user.cpp:31:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:32:48: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for( i = 1; i <= n; ++i ) scanf("%d",&v[i]); ^