Answer / qint

void Traverse(Node *t)
{
if(NULL == t)
return;

//in-order traversing
Traverse(t->left);
printf("%d",t->data);
Traverse(t->right);

//pre-order
printf("%d",t->data);
Traverse(t->left);
Traverse(t->right);

//post order
Traverse(t->left);
Traverse(t->right);
printf("%d",t->data);
}

Struct(s) { int a; long b; } Union (u) {int a; long b; } Print sizeof(s)and sizeof(u) if sizeof(int)=4 and sizeof(long)=4

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