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
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