Re: [Haskell-cafe] Specify array or list size?

8 May 2005


      At 12:04 PM -0700 2005/5/7, Jacob Nelson wrote:
...
GCC knows how big an array is:
jake$ cat > arrsizetest.c
#include <stdio.h>
int main()
{
        int a[50];
        printf("sizeof a == %d\n",sizeof(a));
        return 0;
}
jake$ gcc arrsizetest.c
jake$ ./a.out
sizeof a == 200
jacob
gcc knows the size of an array variable only in the scope of its definition:

#include <stdio.h>

void f( int x[] )
{
         printf("f:    sizeof a == %d\n",sizeof(x));
}

int main()
{
         int a[50];
         printf("main: sizeof a == %d\n",sizeof(a));
         f( a );
         return 0;
}

ham% gcc arrsize.c
ham% a.out
main: sizeof a == 200
f:    sizeof a == 4

Cheers,

--Ham

Re: [Haskell-cafe] Specify array or list size?

Hamilton Richards