1. (1 point) Write a single statement to create an array that contains values fo

Question

1. (1 point) Write a single statement to create an array that contains values for daily water usage over a week (in gallons). (You should make up these values using any numbers between 50 and 500.) Name your array/variable water_usage. There should be one entry in the array for each day of the week.

2. (2 point) Create a new variable, current_day, and set it to an integer from 1 to 7. Then use the current­_day to print out the water usage for that day (ie, index into the water_usage array you created in problem 1.

3. (1 points) Given an array monthly_water_usage, show how you would create a variable named number_of_days and assign to it the number of elements contained in monthly_water_usage. You may not hardcode the number of elements.

4. (1 point) Write a statement to create an array of 20 integers, all set to zero, and store this array in a variable named counts.

5. (1 point) If you want to repeatedly ask a user to enter 10 grades, what is the best MATLAB programming construct to use? (Just give one MATLAB keyword.)

6. (2 points) What are the differences between a function and a script in MATLAB? List at least two differences, and describe each one.

7. (2 points) Suppose you see this in a MATLAB script:
sine(4)

Is there an easy way to determine if this is a call to a function named sine, or an array access to the array stored in sine? How would you figure this out?

Explanation / Answer

1.int waterusage[7];

for(int i=0;i<7;i++)

cin>>wateusage[i];

2.int currentday;

cin>>currentday; /* values from 1 to 7 */

if currentday==1

cout<<waterusage[0];

this will continue for 7 days.

3. int monthly_water_usage[n];

int numberofdays

numberofdays=n;

4.int a[20]={0};

int counts;

for (i=0;i<20;i++)

counts=a[i];

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