Compilare: user.cpp:23: warning: this decimal constant is unsigned only in ISO C90 user.cpp:129:2: warning: no newline at end of file user.cpp: In function 'void bf(int)': user.cpp:13: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'int main()': user.cpp:33: warning: comparison between signed and unsigned integer expressions user.cpp:35: warning: comparison between signed and unsigned integer expressions user.cpp:46: warning: comparison between signed and unsigned integer expressions user.cpp:49: warning: comparison between signed and unsigned integer expressions user.cpp:50: warning: comparison between signed and unsigned integer expressions user.cpp:52: warning: comparison between signed and unsigned integer expressions user.cpp:56: warning: comparison between signed and unsigned integer expressions user.cpp:64: warning: comparison between signed and unsigned integer expressions user.cpp:65: warning: comparison between signed and unsigned integer expressions user.cpp:66: warning: comparison between signed and unsigned integer expressions