Compilare: user.cpp:227: warning: this decimal constant is unsigned only in ISO C90 user.cpp:277: 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:239: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'int test_printf()': user.cpp:342: warning: comparison between signed and unsigned integer expressions user.cpp:344: warning: comparison between signed and unsigned integer expressions user.cpp:352: warning: control reaches end of non-void function user.cpp: In function 'int init_read()': user.cpp:316: warning: control reaches end of non-void function user.cpp: In function 'int dijkstra(int, int)': user.cpp:260: warning: control reaches end of non-void function