Compilare: user.cpp:229: warning: this decimal constant is unsigned only in ISO C90 user.cpp:286: 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:240: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'int test_printf()': user.cpp:351: warning: comparison between signed and unsigned integer expressions user.cpp:353: warning: comparison between signed and unsigned integer expressions user.cpp:361: warning: control reaches end of non-void function user.cpp: In function 'int init_read()': user.cpp:325: warning: control reaches end of non-void function user.cpp: In function 'int dijkstra(int, int)': user.cpp:269: warning: control reaches end of non-void function