(20 min) Examine the following incomplete C++ program, which evaluates a mathematical formula given as 9r3 – 27x2 – 4x + 12 y = V3x2 +1 + |5 – x4| (1) +include sing etd:

C++ Programming: From Problem Analysis to Program Design
8th Edition
ISBN:9781337102087
Author:D. S. Malik
Publisher:D. S. Malik
Chapter6: User-defined Functions
Section: Chapter Questions
Problem 1TF: Mark the following statements as true or false: a. To use a predefined function in a program, you...
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(20 min) Examine the following incomplete C++ program, which evaluates a mathematical
formula given as
9x3 – 27x? – 4x + 12
y =
V3x2 +1 + |5 – x4|
(1)
tinclude <iostream>
using namespace std;
/* a. Write the definition for function myFunc () */
int main ()
{
double x, y;
cout « "Enter value x: ";
cin >> x;
y = myFunc (x);
/* b. Write the statements that print out the values of x and y,
as well as a simple description of y */
In this program, myFunc () is a function which receives a user-input value x and returns value :
as in Eqn (1). The last part of the program should print out the values of a and y, together with
a simple description for y. The description for y should be different, depending on the value of
y, as shown in the following table.
Transcribed Image Text:(20 min) Examine the following incomplete C++ program, which evaluates a mathematical formula given as 9x3 – 27x? – 4x + 12 y = V3x2 +1 + |5 – x4| (1) tinclude <iostream> using namespace std; /* a. Write the definition for function myFunc () */ int main () { double x, y; cout « "Enter value x: "; cin >> x; y = myFunc (x); /* b. Write the statements that print out the values of x and y, as well as a simple description of y */ In this program, myFunc () is a function which receives a user-input value x and returns value : as in Eqn (1). The last part of the program should print out the values of a and y, together with a simple description for y. The description for y should be different, depending on the value of y, as shown in the following table.
Description to be printed
= 0
y is zero.
>0
y is positive.
< 0
y is negative.
Your task is to fill in the missing statements indicated by /* ...*/ in the above C++ program.
The hints as to the missing statements are provided as follows.
a. Write the definition for function myFunc ().
b. Write the statements that print out the values of x and y, as well as a simple description of
y.
Transcribed Image Text:Description to be printed = 0 y is zero. >0 y is positive. < 0 y is negative. Your task is to fill in the missing statements indicated by /* ...*/ in the above C++ program. The hints as to the missing statements are provided as follows. a. Write the definition for function myFunc (). b. Write the statements that print out the values of x and y, as well as a simple description of y.
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