Part A: sizeof and printf

As we’ve learned in class, in C the size of data types are not exactly defined. In this lab, you will write a program that displays the size of the various data types.

Using the sizeof() keyword, determine the size of the following data types:

int

short

long

long long

unsigned int

char

float

double

long double

Have the output be displayed to the screen in the following tabular (use tabs to align the column of sizes) format:

int 4 bytes

When you are done, we can use a feature of the UNIX shell to submit the output. Text that is displayed to the screen in UNIX can be captured into a file using the > (redirection) command.

Run your program like (assuming you named the output file “lab2a”):

./lab2a > lab2a.txt

And now the file lab2a.txt will contain the output, and the screen will be empty. You can open lab2a.txt in pico to check the output.

Hint:

· Look at your first lab for information on how to compile and run a program

Part B: Planetary Weights

You may remember from high school science that while mass is a constant, your weight is actually dependent on your mass multiplied by how strong the gravitational pull of the planet is. So if you were to travel to different planets, your weight would change. In this lab, you are asked to compute just how much someone would weigh on the other planets in our solar system.

Here is the table of relative gravitational strength as compared to earth:

Planet	Relative Strength
Mercury	0.38
Venus	0.91
Mars	0.38
Jupiter	2.54
Saturn	1.08
Uranus	0.91
Neptune	1.19

What you need to do

Your task is to write a program which:

· Asks the user to input a weight

· Displays that weight scaled appropriately on each of the other 8 planets

Example

Please enter the weight you’d like to convert: 100

Here is your weight on other planets:

Mercury 38 lbs

Venus 91 lbs

Mars 38 lbs

Jupiter 254 lbs

Saturn 108 lbs

Uranus 91 lbs

Neptune 119 lbs

Pluto 6 lbs

Redirect the output to a file named lab2b.txt

What to Hand In

tar cvf USERNAME_lab2.tar *.txt

gzip USERNAME_lab2.tar

cp USERNAME_lab2.tar.gz ~jrmst106/submit/449