Compilare: user.cpp: In function 'void dfsCV(int)': user.cpp:112: warning: comparison between signed and unsigned integer expressions user.cpp:134: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'int dijkstra(int, int)': user.cpp:160: warning: comparison between signed and unsigned integer expressions user.cpp:186: warning: comparison between signed and unsigned integer expressions user.cpp:272: warning: comparison between signed and unsigned integer expressions user.cpp:303: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'int test_printf()': user.cpp:396: warning: comparison between signed and unsigned integer expressions user.cpp:398: warning: comparison between signed and unsigned integer expressions user.cpp:406: warning: control reaches end of non-void function user.cpp: In function 'int init_read()': user.cpp:370: warning: control reaches end of non-void function user.cpp: In function 'int dijkstra(int, int)': user.cpp:314: warning: control reaches end of non-void function