Compilare: user.cpp:15: warning: this decimal constant is unsigned only in ISO C90 user.cpp: In function ‘void df()’: user.cpp:20: warning: comparison between signed and unsigned integer expressions user.cpp:15: warning: unused variable ‘minim’ user.cpp: In function ‘int main()’: user.cpp:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:37: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:38: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:41: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result