Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:39:37: error: invalid conversion from ‘unsigned char*’ to ‘const char*’ [-fpermissive] scanf( "%s", S ); N = strlen( S ); ^ In file included from /usr/include/c++/4.8/cstring:42:0, from user.cpp:3: /usr/include/string.h:399:15: error: initializing argument 1 of ‘size_t strlen(const char*)’ [-fpermissive] extern size_t strlen (__const char *__s) ^ user.cpp:36:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen( "ghicit.in" , "r", stdin ); ^ user.cpp:37:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen( "ghicit.out", "w", stdout ); ^ user.cpp:39:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf( "%s", S ); N = strlen( S ); ^