Cos 201

Question 1

Mention the features of c

Answer 1

1)It is powerful and flexible
2) it is portable
3) it is efficient
4) it is programmer oriented

Question 2

Characteristics of c

Answer 2

1) is it is a general purpose programming language
2) it is a structured programming language
3) it helps in the
development of system software
4) has a rich set of operators
5) allows for compact representation of expressions
6) allows for the manipulation of inter processor registers
7) supports a rich set of data types
8) has less number of reserved words
9) can extend it self by adding more function to it library

Question 3

What is the main application of c

Answer 3

Development of system and application software

Question 4

What are tokens

Answer 4

They are the basic and smallest unit of a c program

Question 5

List the 6 tokens we have and explain

Answer 5

1) key words- these are reserved words with standard predefined meaning that only perform a specific task.
2) identifiers- they are use to refer to a particular item
3) strings - this is a combination of characters
4) operator - helps execute expressions
5) special symbols - are symbols declared by the programmer to carry out a specific task
6) constant - are identifiers that do not change , they have a fixed meaning

Question 6

List the 4 types of constant and explain

Answer 6

1) integer constant- contains integers
2) string coat abt - are represented by double quotes
3) string constants - contains decimal points
4) character constant- contains characters that do not change

Question 7

What are the basic component of a c program

Answer 7

1) pre processor statement
2) main ()
3) a pair of curly braces
4) declaration
5) statements
6) user defined function

Question 8

What are preprocessor statements

Answer 8

They are statements that tell the processor what is required to carry out some tasks eg #include

Question 9

What are header files

Answer 9

They use use to provide necessary information in support of various library functions