Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cornell!rochester!rit!ritcsh!sabin!bjm
From: bjm@sabin.UUCP (Brendan J. McMahon)
Newsgroups: comp.lang.c
Subject: malloced structure initilization
Message-ID: <202@sabin.UUCP>
Date: 8 Feb 89 16:09:19 GMT
Reply-To: bjm@sabin.UUCP (Brendan J. McMahon)
Organization: Sabin Metal Corp., Scottsville, NY
Lines: 38

/*
Simple problem - 
How do you initialize memory malloced for a structure without using calloc,
and without initilizing each structure element explicitly?
Example --
*/

#include <stdio.h>
#include <malloc.h>

struct foo{
    int a;
    long b;
    char c[80];
    double d;
};

main()
{
    struct foo *fooptr;

    if ( (fooptr=(struct foo *)malloc(sizeof(struct foo))) == NULL){
              puts("Malloc Bombed");
              exit(-1);
    }

    func(fooptr);
}

func(fooptr)
    struct foo *fooptr;
{
    struct foo *fp2;

    for(fp2=fooptr; fp2 < fooptr + sizeof(struct foo);  fp2++)
             *fp2=NULL;  /* Error - incompatible types */

}