how can I use pointer to structer ?
how can I call and print the Pointer : ptr->address
Code:#include<stdio.h> struct account { int address; int value; }; typedef struct account act; void get_value(int *a){ *a += 10; }; void get_address(int *s){ *s+=100; } main() { act *ptr; act act1; act1.value = 20 ; ptr->address = 20; get_address(&ptr->address); get_value(&act1.value); printf(" %i\n " ,act1.value); printf(" %i " ,ptr->address); }
Your pointer 'ptr' points to nowhere.
Initialize it like:
Now, the pointer points to the structure 'act1'.Code:… act act1; act *ptr = &act1; …
Other have classes, we are class
> ptr->address = 20;
Before you do this, you need to do this
ptr = &act1;
Also, you need to say
int main()
And also say this at the end of main
return 0;
If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
If at first you don't succeed, try writing your phone number on the exam paper.
is there any diagram to understand that better , I changed the assignment of act1 and ptr and I got it but i need more demonstrationOriginally Posted by WoodSTokk
, any diagram you recommend me to check out ?
and thank you for your answer
If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
If at first you don't succeed, try writing your phone number on the exam paper.
Why don't look at this pointer tutorial .
Warning: Some or all of my posted code may be non-standard and as such should not be used and in no case looked at.
