Which of the following function declarations with default arguments are correct?

Question

a) ```
void g(int length, int width, int height = 1);
```
b) ```
void g(int length=1, int width, int height);
```
c) ```
void g(int length, int width=1, int height = 1);
```
d) ```
void g(int length=1, int width=1, int height);
```

Answer 1

a) ```
void g(int length, int width, int height = 1);
```

and

c) ```
void g(int length, int width=1, int height = 1);
```

C++ allows default arguments. If a default argument is provided for a parameter, all parameters to the right of this must be provided with default arguments.