Compilare: user.cpp: In function ‘int main()’: user.cpp:25:20: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[100002]’ [-Wformat=] scanf("%s",&sir); ^ user.cpp:22:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("smooth2.in","r",stdin); ^ user.cpp:23:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("smooth2.out","w",stdout); ^ user.cpp:25:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s",&sir); ^ In file included from /usr/include/string.h:635:0, from /usr/include/c++/5/cstring:42, from user.cpp:2: In function ‘void* memset(void*, int, size_t)’, inlined from ‘int main()’ at user.cpp:32:36: /usr/include/bits/string3.h:90:70: warning: call to void* __builtin___memset_chk(void*, int, unsigned int, unsigned int) will always overflow destination buffer return __builtin___memset_chk (__dest, __ch, __len, __bos0 (__dest)); ^ In function ‘void* memset(void*, int, size_t)’, inlined from ‘int main()’ at user.cpp:37:40: /usr/include/bits/string3.h:90:70: warning: call to void* __builtin___memset_chk(void*, int, unsigned int, unsigned int) will always overflow destination buffer return __builtin___memset_chk (__dest, __ch, __len, __bos0 (__dest)); ^