Eroare de compilare: user.c:10:5: error: unknown type name ‘ship’ ship *ships; ^ user.c:14:1: error: unknown type name ‘stack’ stack *newStack(int cap) ^ user.c: In function ‘newStack’: user.c:16:5: error: unknown type name ‘stack’ stack *ret = new stack; ^ user.c:16:18: error: ‘new’ undeclared (first use in this function) stack *ret = new stack; ^ user.c:16:18: note: each undeclared identifier is reported only once for each function it appears in user.c:16:22: error: expected ‘,’ or ‘;’ before ‘stack’ stack *ret = new stack; ^ user.c:17:8: error: request for member ‘ships’ in something not a structure or union ret->ships = new ship[cap]; ^ user.c:17:22: error: expected ‘;’ before ‘ship’ ret->ships = new ship[cap]; ^ user.c:18:8: error: request for member ‘size’ in something not a structure or union ret->size = 0; ^ user.c: At top level: user.c:22:1: error: unknown type name ‘stack’ stack *pop(stack *st) ^ user.c:22:12: error: unknown type name ‘stack’ stack *pop(stack *st) ^ user.c:28:1: error: unknown type name ‘stack’ stack *push(stack *st, ship s) ^ user.c:28:13: error: unknown type name ‘stack’ stack *push(stack *st, ship s) ^ user.c:28:24: error: unknown type name ‘ship’ stack *push(stack *st, ship s) ^ user.c:35:1: error: unknown type name ‘ship’ ship index(stack *st, int i) ^ user.c:35:12: error: unknown type name ‘stack’ ship index(stack *st, int i) ^ user.c:39:10: error: unknown type name ‘stack’ int size(stack *st)