In these exercises you must use the notes above to come up with answers to the questions below (no peeking at the answers in advance!)

1. I want to hold the following, suggest sensible variable types for them:

• Number of chickens in the hen house

• Average weight of each chicken

• Speed of the car in miles per hour

• Price in pence of the ice cream
  
  
  

2. Which of the following are not sensible variable names, and why:

• count
  

• 2sensor
  

• car_speed
  

• engine-size
  

• x
  
  

3. What would be the result of the following expressions:

• 2 + 2

• 2 + 3 * 5

• (2+3) * 4

• 5 & 8

• 4 | 5
  

• 5 ^ 7
  

• 5 ^ 2
  

• 'A' + 3
  

• 7 >> 1
  

• 3 << 2
  

• 10 % 3
  
  

4. Explain the value that the variables would have after the following C had been obeyed:

/* equation A */
int i, result ;
i = 0 ;
result = i + 1 ;

/* equation B */
int i = 1, result ;
result = ++i ;

/* equation C */
float x ;
x = 7 / 2 ;

/* equation D */
float x ;
int i ;
x = 7.0 / 2.0 ;
i = x ;