Compilare: user.cpp:227: warning: this decimal constant is unsigned only in ISO C90 user.cpp:284: warning: this decimal constant is unsigned only in ISO C90 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:238: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'int test_printf()': user.cpp:349: warning: comparison between signed and unsigned integer expressions user.cpp:351: warning: comparison between signed and unsigned integer expressions user.cpp:359: warning: control reaches end of non-void function user.cpp: In function 'int init_read()': user.cpp:323: warning: control reaches end of non-void function user.cpp: In function 'int dijkstra(int, int)': user.cpp:267: warning: control reaches end of non-void function