Compilare: user.cpp: In function ‘int main()’: user.cpp:62: warning: deprecated conversion from string constant to ‘char*’ user.cpp:73: warning: deprecated conversion from string constant to ‘char*’ user.cpp:69: warning: unused variable ‘x’ user.cpp:54: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:55: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:57: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:61: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result