Compilare: user.cpp:24: warning: integer constant is too large for ‘long’ type user.cpp:158: warning: integer constant is too large for ‘long’ type user.cpp: In function ‘int main()’: user.cpp:198: warning: comparison between signed and unsigned integer expressions user.cpp:155: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:156: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:157: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:162: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result