[LCP]storage classifiers

[T.Srinath]

dear techies,
    
hope the list has   settled down 
but a doubt has unsettled me

consider the snippet

extern int i;
main()
{
 printf("%d",i);
}
gcc obvious shouts at me because the first line a declaration and it cannot link to a definition
ok , but see this code

extern int i=100;
main()
{
 printf("%d",i);
}

eventhough there is no definition to link with , it gets initialised and works well. 

but if i put the first statement into the main block like the following 

main()
{
 extern int i=100;
 printf("%d",i);
}

i get the error message.

how can this phenomenon be explained? how do the storage classes work internally???


Regards, 
Srinath Thiruvengadam

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.linux.org.au/pipermail/linuxcprogramming/attachments/20010712/6afbafe0/attachment.html