Compilare: user.cpp: In function ‘void dfs1(int)’: user.cpp:38: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void dfs2(int)’: user.cpp:52: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void fa_graf()’: user.cpp:83: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘bool cupleaza(int)’: user.cpp:99: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void fa_cuplaj()’: user.cpp:118: warning: comparison between signed and unsigned integer expressions user.cpp:124: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void fa_ceva2()’: user.cpp:135: warning: comparison between signed and unsigned integer expressions user.cpp:135: warning: comparison between signed and unsigned integer expressions user.cpp:140: warning: comparison between signed and unsigned integer expressions user.cpp:140: warning: comparison between signed and unsigned integer expressions user.cpp:145: warning: comparison between signed and unsigned integer expressions user.cpp:150: warning: comparison between signed and unsigned integer expressions user.cpp:158: warning: comparison between signed and unsigned integer expressions user.cpp:159: warning: comparison between signed and unsigned integer expressions user.cpp:163: warning: comparison between signed and unsigned integer expressions user.cpp:166: warning: statement has no effect user.cpp:173: warning: comparison between signed and unsigned integer expressions