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C: array in global and inside funtion

+2 votes
403 views 
#include <stdio.h>
char buff[10];

main()
{
   char buff1[10];
   int i = 10;
   while(i-- > 0 ) 
   {
      printf("%d %d\n", buff[i], buff1[i] );   
   }       
}

Here, buff will display all zeros where as buff1 through garbage values. How ?

posted Mar 9, 2014 by sivanraj

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1 Answer

+2 votes

Global variables are initialized to zero while local are not so you see buff is all zero and buff1 is all garbage.

answer Mar 9, 2014 by Salil Agrawal
how about the storage for buff1 ? is it in stack segment ?
commented Mar 9, 2014 by sivanraj
Yes that is correct, local variables(non static) would be stored in the stack of the function.
commented Mar 9, 2014 by Salil Agrawal
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