Compilare: user.cpp: In function 'int read_data()': user.cpp:88: warning: large integer implicitly truncated to unsigned type user.cpp: In function 'int write_data()': user.cpp:118: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'void dfsCN(short int)': user.cpp:136: warning: comparison between signed and unsigned integer expressions user.cpp:159: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'int dijkstra()': user.cpp:201: warning: comparison between signed and unsigned integer expressions user.cpp:203: warning: comparison between signed and unsigned integer expressions user.cpp:210: warning: comparison between signed and unsigned integer expressions user.cpp:227: warning: comparison between signed and unsigned integer expressions user.cpp:260: warning: comparison between signed and unsigned integer expressions user.cpp:272: warning: large integer implicitly truncated to unsigned type user.cpp:273: warning: comparison between signed and unsigned integer expressions user.cpp:274: warning: comparison between signed and unsigned integer expressions user.cpp:279: warning: control reaches end of non-void function user.cpp: In function 'int write_data()': user.cpp:123: warning: control reaches end of non-void function user.cpp: In function 'int read_data()': user.cpp:107: warning: control reaches end of non-void function