Thread: union

  1. #1
    Samuel shiju's Avatar
    Join Date
    Dec 2003
    Posts
    41

    union

    I am not getting this code.
    Code:
    #include <stdio.h>
    #include <stdlib.h>
    
    int main ( void )
    {
     union{
    	 struct{
    		 char a;
    		 char b;
    		 char c;
    		 char d;
    		} car;
    	 struct{
    		 int i;
    		 int j;
    		}in;
    		long z;
    	}pqr;
    
    	pqr.car.a=3;
    	pqr.car.b=2;
    	pqr.car.c=1;
    	pqr.car.d=0;
    	printf("%d...%d...%ld",pqr.in.i,pqr.in.j,pqr.z);
     return EXIT_SUCCESS;
    }
    output
    ---------
    66051...-370086...66051

  2. #2
    Registered User Draco's Avatar
    Join Date
    Apr 2002
    Posts
    463
    what specifically don't you get? You have to actually ask a question to get any answers.

  3. #3
    and the hat of int overfl Salem's Avatar
    Join Date
    Aug 2001
    Location
    The edge of the known universe
    Posts
    39,659
    Print them out using
    %04x for the int, and %08x for the long

    Oh, this code assumes 2-byte ints
    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.

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