Compilare: user.cpp: In function ‘int main()’: user.cpp:12: warning: format ‘%lu’ expects type ‘long unsigned int*’, but argument 2 has type ‘long long int*’ user.cpp:18: warning: format ‘%lu’ expects type ‘long unsigned int*’, but argument 2 has type ‘long long int*’ user.cpp:19: warning: format ‘%lu’ expects type ‘long unsigned int’, but argument 2 has type ‘long long int’ user.cpp:48: warning: format ‘%ld’ expects type ‘long int’, but argument 2 has type ‘long long int’ user.cpp:49: warning: format ‘%ld’ expects type ‘long int’, but argument 2 has type ‘long long int’ user.cpp:50: warning: format ‘%ld’ expects type ‘long int’, but argument 2 has type ‘long long int’ user.cpp:51: warning: format ‘%ld’ expects type ‘long int’, but argument 2 has type ‘long long int’ user.cpp:10: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:11: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, 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:15: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result