How do I use int64 and what are his limits? Can it be signed/unsigned?

Edited by author 13.09.2004 15:23

for example, problem 1000:

#include <stdio.h>
__int64 A, B;
unsigned __int64 Result;


int main()
{
scanf("%I64d %I64d", &A, &B);
Result = A + B;
printf("%I64u\n", Result);

return 0;
}

Oh, I forgot,
for signed, limits are: [-9,223,372,036,854,775,808..9,223,372,036,854,775,807] and for unsigned [0..18,446,744,073,709,551,615].

thanks