Which of the following lines must be included in a program that has string variables?

1. binclude (string class) 0 #
2. inclode string
3. string var:
4. none of these 0 # include namespace std:

Acomputer has a two-level cache. suppose that 60% of the memory references hit on the first level cache, 35% hit on the second level, and 5% miss. the access times are 5 nsec, 15 nsec, and 60 nsec, respectively, where the times for the level 2 cache and memory start counting at the moment it is known that they are needed (e.g., a level 2 cache access does not even start until the level 1 cache miss occurs). what is the average access time?

How can a user delete a drawing object

(, urgent need): how do i change my username