Compilare: user.cpp: In function ‘int main()’: user.cpp:64:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen( FILE_IN, "r", stdin ); ^ user.cpp:65:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen( FILE_OUT, "w", stdout ); ^ user.cpp: At global scope: user.cpp:33:21: warning: ‘float randf()’ declared ‘static’ but never defined [-Wunused-function] static float inline randf(); ^ user.cpp:34:21: warning: ‘float randfr()’ declared ‘static’ but never defined [-Wunused-function] static float inline randfr(); ^