1 - Intro Lecture

Question 1

Is C an object oriented or function oriented language?

Answer 1

Function oriented

Question 2

Does C have polymorphism?

Answer 2

Yes, but only in a very limited fashion e.g. integer to float

Question 3

How is memory managed in a C program?

Answer 3

Manually with function calls e.g. malloc

Question 4

How is concurrency managed in C?

Answer 4

Only through library functions

Question 5

Does C have support for exceptions and exception handling?

Answer 5

No

Question 6

How can you find the length of an array in C?

Answer 6

You can’t. You need to keep track of its length yourself

Question 7

Does C have a string data type?

Answer 7

Not without installing a library. Strings are just an array of chars terminated with a /0

Question 8

What is the name of the starting function in a C program?

Answer 8

main()

This is started when the executable is run by the user

Question 9

include

What does the following C code do?:

Answer 9

Imports the standard input/output header to allow access to basic input and output functions

Question 10

What are the two main C compilers for Unix?

Answer 10

gcc and clang

Question 11

What does the following compiler option do?

-Wall

Answer 11

Shows all warnings

Question 12

What does the following compiler option do?

-Wextra

Answer 12

Shows extra warnings

Question 13

What does the following compiler option do?

-g

Answer 13

Adds debugging information

Question 14

What does the following compiler option do?

-o

Answer 14

Name the executable

Question 15

What does the following compiler option do?

-O -O2 -O3

Answer 15

Optimise (more and more)