Compilare: user.cpp: In function ‘int main()’: user.cpp:17: warning: format ‘%ld’ expects type ‘long int*’, but argument 2 has type ‘long long int*’ user.cpp:33: warning: format ‘%lld’ expects type ‘long long int’, but argument 2 has type ‘long int’ user.cpp:35: warning: format ‘%lld’ expects type ‘long long int’, but argument 2 has type ‘long int’ user.cpp:41: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp:21: warning: unused variable ‘t’ user.cpp:7: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:8: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:9: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:12: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:14: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:21: warning: ‘nr’ may be used uninitialized in this function