CSCI 240 – Computer Science Questions and Answers | Practice Exam Material

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CSCI 240 Final Exam Questions and
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The class X contains two data members: an integer called xVal and a float

called xPerc. Which of the following is NOT a valid prototype for the class

definition for X?




a. void X( int, float );


b. void setxVal( int );


c. float getxPerc();


d. X( int, float );


e. void printX();


 a. void X( int, float );




An instance of a class is known as a/an .




a. variable


b. method


c. object

,d. thing


 c. object




The :: operator is used to associate a method with a specific class.




a. true


b. false


 a. true




Which of the following statements (a-d) about classes is true?




a. A class can contain both data members and methods


b. The members of a class may be private or public


c. The name of the constructor is always the same as the name of the class


d. The class definition contains prototype statements for the methods


e. All of the statements (a-d) are true.


 e. All of the statements (a-d) are true.




If a string will need room for 25 characters, how should it be defined so that it

will be a valid string?

,a. char str[25];


b. char str[24];


c. char str[26];


d. char str[];


 c. char str[26];




Which of the following string functions will ALWAYS produce a valid string after

execution?




a. strcpy


b. strcat


c. Both of the functions (a-b) will produce a valid string


 c. Both of the functions (a-b) will produce a valid string




The null terminator is .




a. used to advance to a new line when executing a cout statement


b. represented as '\0'

, c. used to end a valid string


d. a movie starring Arnold Schwarzenegger


e. All of the statements (a-d) are correct


f. Only statements b and c are correct


 f. Only statements b and c are correct.




Which of the following is the correct definition for a variable called dblRef that

can hold a reference to the double variable dblNum?




a. double dblRef = dblNum;


b. double *dblRef = &dblNum;


c. double &dblRef = dblNum;


d. double &dblRef;


 c. double &dblRef = dblNum;




Which of the following statements (a-d) are true if the following lines of code

are executed?




int G = 17;


int &H = G;




a. H is now an alternate name for G