Compilare: user.cpp: In function ‘int main()’: user.cpp:18:21: warning: unused variable ‘t’ [-Wunused-variable] int n, i, j, s, t, d, k, ma, ok; ^ user.cpp:18:24: warning: unused variable ‘d’ [-Wunused-variable] int n, i, j, s, t, d, k, ma, ok; ^ user.cpp:18:30: warning: unused variable ‘ma’ [-Wunused-variable] int n, i, j, s, t, d, k, ma, ok; ^ user.cpp:18:34: warning: unused variable ‘ok’ [-Wunused-variable] int n, i, j, s, t, d, k, ma, ok; ^ user.cpp:15:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("editor.in","r",stdin); ^ 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("editor.out","w",stdout); ^ user.cpp:21:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n",&n); ^ user.cpp:25:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s",q); ^