reinvent.cpp: In function `void citire()': reinvent.cpp:45: warning: unused variable `int j' reinvent.cpp: In function `void initializare(int)': reinvent.cpp:120: warning: comparison between signed and unsigned integer expressions reinvent.cpp:109: warning: unused variable `int j' reinvent.cpp: In function `void prim()': reinvent.cpp:138: warning: comparison between signed and unsigned integer expressions