STRUCTURED PROGRAMMING

Question 1

What are 4 ways to write functions in C?

Answer 1

• functions with no return value
• functions with return values
• functions with no parameters
• functions with one or more parameters

Question 2

1. what is the size of an integer in C
2. what is the size of a character in C

Answer 2

Integers:
32 bits -> 4 bytes
64 bits -> 8 bytes

Characters:
32bits -> 1 byte
64bits -> 1 byte

Question 3

What is a variable?

Answer 3

It is a named location in memory, that holds a value

Question 4

What is a datatype?

Answer 4

A datatype categorization that determines what type of values a variable can hold and what operations can be peformed on said values

Question 5

What is the defrence between a call by value and a call by reference?

Answer 5

Both have to do with function paramenters, with call by value the function takes a value as input but performs operations on a copy of that value, hence the original value or variable is unchanged

With call by refrence the variable takes as parameter the reference of a value/variable (datatype paramname) and any operations done a permenent of the original value. any time the value is used within the fuction we write a * infront of it, indication that it is a reference

Question 6

How do you calculate average marks with coeficients?

Answer 6

Sum of all marks multiplied by their coeficients divided by the sum of all coeficients