sume4.cpp: In function `void suma(unsigned int, unsigned int&, unsigned int&)': sume4.cpp:19: warning: comparison between signed and unsigned integer expressions sume4.cpp:23: warning: comparison between signed and unsigned integer expressions sume4.cpp:27: warning: comparison between signed and unsigned integer expressions sume4.cpp:8: warning: `int d' might be used uninitialized in this function sume4.cpp: In function `void citire()': sume4.cpp:36: warning: comparison between signed and unsigned integer expressions