Two decimal places using printf( )

I'm trying to write a number to two decimal places using printf() as follows:

#include <cstdio>
int main()
{
  printf("When this number: %d is assigned to 2 dp, it will be: 2%f ", 94.9456, 94.9456);
  return 0;
}

When I run the program, I get the following output:

# ./printf
When this number: -1243822529 is assigned to 2 db, it will be: 2-0.000000

Why is that?

Thanks.