Interesting why this code gets Crash(2) if it is said that k <= 1000 ????

#include <stdio.h>
int main()
{
int k, r;
scanf("%d%d", &r, &k);
if(k > 1000)
throw 0;
else
printf("6 8\n");
return 0;
}

Sorry, I've found my mistake - R is not integer.
BUT it is not clear from problem statement...