Eroare de compilare: user.c:2:18: error: vector: No such file or directory user.c:3:17: error: queue: No such file or directory user.c:6: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'namespace' user.c:8: error: expected '=', ',', ';', 'asm' or '__attribute__' before '<' token user.c:9: error: expected '=', ',', ';', 'asm' or '__attribute__' before '<' token user.c: In function 'read': user.c:22: error: 'G' undeclared (first use in this function) user.c:22: error: (Each undeclared identifier is reported only once user.c:22: error: for each function it appears in.) user.c:22: error: 'C' undeclared (first use in this function) user.c:22: warning: left-hand operand of comma expression has no effect user.c:23: warning: left-hand operand of comma expression has no effect user.c: In function 'bfs': user.c:32: error: 'Q' undeclared (first use in this function) user.c:35: warning: left-hand operand of comma expression has no effect user.c:35: warning: left-hand operand of comma expression has no effect user.c:35: warning: value computed is not used user.c:42: error: 'G' undeclared (first use in this function) user.c:43: error: 'C' undeclared (first use in this function)