Borderou de evaluare (job #307024)

Compilare: user.cpp: In function ‘int main()’: user.cpp:66:14: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] user.cpp:71:18: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] user.cpp:85:20: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] user.cpp:100:18: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] user.cpp:113:20: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] user.cpp:47:14: warning: unused variable ‘nr’ [-Wunused-variable] user.cpp:49:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:50:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp: In function ‘int detluna(char*)’: user.cpp:45:1: warning: control reaches end of non-void function [-Wreturn-type]