I am trying to change my C functions of nested structures to operate on pointers instead of passing and making copies of the structures which are quite large in reality.
here is a simplified version of what I want to do passing the structures around....
struct InnerStruct
{
int int1;
int int2;
};
struct OuterStruct
{
struct innerStruct inner1;
int outerResult;
};
void main (void)
{
struct OuterStruct outer1;
outer1 = get_outer ();
}
struct OuterStruct get_outer (void)
{
struct OuterStruct thisOuter;
thisOuter.inner1 = get_inner (void);
thisOuter.outerResult = get_result (thisOuter.inner1);
return thisOuter;
}
struct InnerStruct get_inner (void)
{
struct InnerStruct thisInnner;
thisInner.int1 = 1;
thisInner.int2 = 2;
return thisInner;
}
int get_result (struct InnerStruct thisInner)
{
int thisResult;
thisResult = thisInner.int1 + thisInner.int2;
return thisResult;
}
but the structure is quite large in reality and this is a frequent operation, so I'd rather pass around the pointers. Just not sure how the syntax works for nested structures like this. Here is my attempt....
struct InnerStruct
{
int int1;
int int2;
};
struct OuterStruct
{
struct innerStruct inner1;
int outerResult;
};
void main (void)
{
struct OuterStruct outer1;
get_outer (&outer1);
}
void get_outer (struct OuterStruct *thisOuter)
{
get_inner (&(thisOuter->inner1));
thisOuter->outerResult = get_result (&(thisOuter->inner1));
}
void get_inner (struct InnerStruct *thisInner)
{
thisInner->int1 = 1;
thisInner->int2 = 2;
}
int get_result (struct OuterStruct *thisInner)
{
int thisResult;
thisResult = thisInner->int1 + thisInner->int2;
return thisResult;
}