Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:9: error: invalid conversion from ‘int*’ to ‘int’ user.cpp:5: warning: address of local variable ‘a’ returned user.cpp:6: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result 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 ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result