Write code that declares x, y, and z as double variables. Then write code that causes z to be assigned the result of x divided by y, rounded as indicated below. Be sure to #include the header file that declares the library functions you use.

a) round up
b) round down
c) round to the nearest integer. Does your code round an exact half up or down? say 2.5?

The header is required for each answer.
```
#include $$
using namespace std;
double x, y, z;
We mentioned what the code does for 2.5. Suppose x is 5.0 and y is 2.0 so we get a quotient of 2.5
```
a) ```
//round up
z = ceil(x/y);
for above values we get 3.0
```
b) ```
// round down
z = floor(x/y);
for above values we get 2.0
```
c) ```
//round nearest integer
z = floor (x/y + 0.5);
For above values of x and y we get 3
```