Explain exactly what the system does when it executes the statement s = a / b Write C++ instructions to swap the contents of two memory cells n and m Write C++ instructions to compute the expression...

Explain exactly what the system does when it executes the statement s = a / b

Write C++ instructions to swap the contents of two memory cells n and m

Write C++ instructions to compute the expression 5x^2 + 23x + 31 for x = 3.6 and to store the answer in a memory cell

Classify each of the following as a valid or invalid variable name. If invalid, explain why.

a. 5k2

b. life_span

c. tote

d. al + b

e. ‘val’

f. bbb3

Which of the following are valid type declarations? Explain the invalid ones.

a. int xl, x2;

b. float k3k;

c. int 45;

d. char val3;

Are the following statements valid assignment statements? Explain the invalid ones

a. float x2 = 45.67;

b. 5val = 89;

c. x2*y = z;

d. int run_time = 67;

Write statements to store the following values in memory cells of the system

a. 564

b. 78.63

c. ‘$’