Compilare: user.cpp: In function 'void dfsCV(int)': user.cpp:106: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'int dijkstra(int, int)': user.cpp:153: warning: comparison between signed and unsigned integer expressions user.cpp:172: warning: comparison between signed and unsigned integer expressions user.cpp:242: warning: comparison between signed and unsigned integer expressions user.cpp:243: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'int test_printf()': user.cpp:352: warning: comparison between signed and unsigned integer expressions user.cpp:354: warning: comparison between signed and unsigned integer expressions user.cpp:362: warning: control reaches end of non-void function user.cpp: In function 'int init_read()': user.cpp:326: warning: control reaches end of non-void function user.cpp: In function 'int dijkstra(int, int)': user.cpp:270: warning: control reaches end of non-void function