Compilare: user.cpp: In function 'void BFS(int)': user.cpp:26: warning: unused variable 'i' user.cpp: In function 'int verif(int, int)': user.cpp:44: warning: unused variable 'i' user.cpp: In function 'int verifgc(int, int)': user.cpp:64: warning: unused variable 'i' user.cpp: In function 'int main()': user.cpp:167: warning: comparison between signed and unsigned integer expressions user.cpp:168: warning: comparison between signed and unsigned integer expressions user.cpp:194: warning: comparison between signed and unsigned integer expressions user.cpp:195: warning: comparison between signed and unsigned integer expressions user.cpp:204: warning: comparison between signed and unsigned integer expressions user.cpp:204: warning: comparison between signed and unsigned integer expressions user.cpp:208: warning: comparison between signed and unsigned integer expressions user.cpp:223: warning: comparison between signed and unsigned integer expressions user.cpp:224: warning: comparison between signed and unsigned integer expressions user.cpp:226: warning: comparison between signed and unsigned integer expressions user.cpp:235: warning: comparison between signed and unsigned integer expressions user.cpp:236: warning: comparison between signed and unsigned integer expressions user.cpp:238: warning: comparison between signed and unsigned integer expressions user.cpp:249: warning: comparison between signed and unsigned integer expressions user.cpp:104: warning: unused variable 'c'