Compilare: user.cpp: In function ‘int main()’: user.cpp:23:23: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[7]’ [-Wformat=] scanf("%s", &c); ^ user.cpp:56:23: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[7]’ [-Wformat=] scanf("%s", &c); ^ user.cpp:15:18: warning: unused variable ‘j’ [-Wunused-variable] int N, K, i, j; ^ user.cpp:13:39: 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:14:41: 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); ^ user.cpp:17:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d\n", &N, &K); ^ user.cpp:23:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s", &c); ^ user.cpp:56:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s", &c); ^