Compilare: user.cpp: In function ‘void brut()’: user.cpp:96: warning: unused variable ‘s’ user.cpp: In function ‘int main()’: user.cpp:154: warning: unused variable ‘k’ user.cpp:156: warning: unused variable ‘r’ user.cpp:119: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:120: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:121: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:124: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result