Answer to Question #262861 in Algorithms for Dion Martins

Question

Choose the correct answer

3 When a function receives a copy of the value stored in an argument used in the function call, it means the variable was _____.

a. pass by address

b. passed by value

c. passed by reference

d. assigned its original value when it was declared

Study the following function call in an algorithm:

Display “The results are”, getArea(len, wid)

2.4 Which of the following statements is also a valid function call?

a. if getArea (len, wid) = true then

b. if getArea (valLen, valWid) == true then

c. getrea (len, wid)

d. r = getArea(valLen, valWid )

Answer 1

1. Passing by address or by reference lets the function to gain access to memory address of the variable, so it receives the original value, not a copy. The correct answer is: b. Passed by value.
2. Getting area of smth usually means receiving integer or float value of area. Statements A, B work with the result of the function as it is boolean, so the use of the function is incorrect. Statement C has a type, and that function will not be called. The correct answer is: d. r = getArea(valLen, valWid)