Need answered ASAP c++

Exercise R7.8. Which of the following assignments are legal in C++?

void f(int p[])

{

int* q;

const int* r;

int s[10];

p = q;

p = r;

p = s;

q = p;

q = r;

q = s;

r = p;

r = q;

r = s;

s = p;

s = q;

s = r;

}

Exercise R7.9. Given the definitions

double values[] = { 2, 3, 5, 7, 11, 13 };

double* p = values + 3;

explain the meanings of the following expressions:

a. values[1]

b. values + 1

c. *(values + 1)

d. p[1]

e. p + 1

f. p values

Exercise R7.12. What is the difference between the following two variable

definitions?

a. char a[] = "Hello";

b. char* b = "Hello";

Exercise R7.13. What is the difference between the following three variable

definitions?

a. char* p = NULL;

b. char* q = "";

c. char r[] = { '\0' };

Exercise R7.14. Consider this program segment:

char a[] = "Mary had a little lamb";

char* p = a;

int count = 0;

while (*p != '\0')

{

count++;

while (*p != ' ' && *p != '\0') p++;

while (*p == ' ') p++;

}

What is the value of count at the end of the outer while loop?