ECS 30A Practice Midterm #1
Hanly and Koffman, 5ed, Chapters 2-5, Closed book and closed notes.
1. (10 points) You just printed something, and realize that it is a binary file that will print a bunch of garbage. What are
the steps you take to cancel the print job?
2. (5 points) What UNIX command would you type to see a list of all of the files (including the hidden files) in directory
hw1?
3. (5 points) You just wrote and saved the file test2.c. Now you want to make sure that only you can read and write it.
What UNIX command would you type to make test.c only readable and writeable by you?
4. (5 points) You want to move all of your C source files (ending in .c) and header files (ending in .h) from your hw1
subdirectory to your mid1 subdirectory. What UNIX command should you type?
5. (5 points) You want to view the file test3.c a screen at a time. What UNIX command would you type?
6. (25 points) Given the following series of if statements, provide the outputs for each X. Note that more than one printf
can be executed for each X.
if (X > 20)
printf(“First ”);
else
if(X < 5)
printf(“Second “);
else
printf(“Third “);
if(X == 20)
printf(“Fourth “);
else
if(X < 19 || X > 25)
printf(“Fifth “);
if(X > 5 && X < 22)
printf(“Sixth ”);
a. (5 points) X = 0 ________________________________________________________________________
b. (5 points) X = 5 ________________________________________________________________________
c. (5 points) X = 17 ________________________________________________________________________
d. (5 points) X = 20 ________________________________________________________________________
e. (5 points) X = 28 ________________________________________________________________________
7. (15 points) Write a for loop that will produce the same output as the following while loop.
int x = 7;
while(x < 20)
{
x = x + 3;
printf(“%d”, x);
}
