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Linked Lists
March 14, 2003 02:26 PM
is it possible to have a linked list of structs within structs? something like this
struct Struct1
{
int num1;
};
struct Struct2
{
Struct1 str1;
Struct2 *pnext;
};
Struct2 teststruct;
now how, if possible, would i access num1 using teststruct?
122
March 14, 2003 02:42 PM
teststruct.str1.num1
or, since you spoke of linked lists
if(pnext != NULL){
teststruct.pnext->str1.num1
}
I am not sure if you can make a declaration of a struct within itself, so you could try
struct Struct2
{
Struct1 str1;
void *pnext;
}
then access with a cast
((Struct2 *)pnext)->str1.num1
[edited by - variant on March 14, 2003 3:47:33 PM]
or, since you spoke of linked lists
if(pnext != NULL){
teststruct.pnext->str1.num1
}
I am not sure if you can make a declaration of a struct within itself, so you could try
struct Struct2
{
Struct1 str1;
void *pnext;
}
then access with a cast
((Struct2 *)pnext)->str1.num1
[edited by - variant on March 14, 2003 3:47:33 PM]
301
March 14, 2003 03:00 PM
quote:
Original post by variant
I am not sure if you can make a declaration of a struct within itself, so you could try
Don''t worry, you can do that
314
March 14, 2003 03:01 PM
The pointer was ok as it was...What''s not allowed is this:
struct Struct2 {Struct1 obj1;Struct2 infiniteMemoryUseIsNotPossibleSoCompileError;}
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122
March 14, 2003 03:53 PM
You can''t declare a structure with the tag unless you prefix it with the struct keyword.
like this
Thats why we have typedef...
-Will
like this
struct mystruct { int data; struct mystruct* next;}struct mystruct* head; Thats why we have typedef...
-Will
712
March 14, 2003 04:06 PM
quote:You can in c++.
Original post by AcidInjury
You can''t declare a structure with the tag unless you prefix it with the struct keyword.
This topic is closed to new replies.
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