Compilare: user.c:37: warning: return type defaults to 'int' user.c:65: warning: return type defaults to 'int' user.c: In function 'criticalNodes': user.c:103: warning: 'return' with no value, in function returning non-void user.c: In function 'Dijkstra': user.c:197: warning: suggest parentheses around assignment used as truth value user.c: In function 'cmpDistAll': user.c:132: warning: control reaches end of non-void function user.c: In function 'insert': user.c:55: warning: control reaches end of non-void function user.c: In function 'geDist': user.c:164: warning: 'b_car' may be used uninitialized in this function