CSC-1390 Chapter 1

True

A C++ declaration introduces only an identifier's spelling and specifies its type. A) True B) False

True

A C++ declaration is a definition that also allocates storage for an identifier's value (or function's body etc.). A) True B) False

False

A computer program is a set of instructions intended for only the computer to follow. A) True B) False

False

A program should have a comment on every line. A) True B) False

True

A program's comments should connect the program code to the problem being solved. A) True B) False

assigned a value

An l-value is: A) an expression that can be only be placed on the left of any operator such as +, * , /, etc. B) assigned a value C) can never have a value fetched from it D) is designed for use by a left-handed person

can have a value fetched from it

An r-value is: A) an expression that can be only placed on the right of any operator such as +, *, / etc. B) can never be assigned a value C) can have a value fetched from it D)is designed for use by a right-handed person.

Defined

Before a variable is used in C++, it must be: A) initialized B) defined C) used in some expression D) begin with a capital letter E) contain only letters, digits, and underscores

True

C++ not only supports OOP but also supports other programming styles. A) True B) False

False

C++ uses only /** **/ for comments. A) True B) False

False

If we execute the code fragment in an otherwise complete, correct program: int n = 1; cout << n++ << " " << n++ << " " << n++ << endl; the output is guaranteed to be 1 2 3. A) True B) False

False

If we execute this code in an otherwise correct and complete program: n = 1; n = (n++) + (n++); the value of n is guaranteed to be 3 after the second line executes. A) True B) False

False

In C++ the compiler will infer the type intended for a variable from the context in which the variable occurs. A) True B) False

False

In C++ the variables Alpha, ALPHA and AlphA are the same identifier. A) True B) False

xy_z

In C++ which is a legal identifier? A) 9xyz B) X+yz C) xy_z D) xyz!

False

In C++ you can assign an expression of type double to a variable of type int with no problem. A) True B) False

True

In C++ you can assign an expression of type int to a variable of type double with no problem. A) True B) False

be used as an l-value

In C++, a variable that is defined but not initialized may: A) be used in any way any identifier can be used. B) not be used at all C) be used as an l-value D) be used as an r-value E) have its value fetched prior to assignment.

True

OOP is an acronym that means Object Oriented Programming. A) True B) False

#include "cctype "

The following contain several #include directives that may have problems. Which one has one or more problems? A) #include <iostream> B) #include "MyStream.h" C) #include "cctype "

False

The names x, y, and z are satisfactory variable names for the lengths of the legs and hypotenuse of a triangle. A) True B) False

False

The namespace facility is a tool used that assists in the study of genealogy. A) True B) False

None of the above

The person responsible for the initial development of C++ was: A) Denise Richard B) James Gosling C) Barney Strousdup D) Brian Kernigham E) None of the above

False

The range of values for an int variable is from about 0 to +2 billion. A) True B) False

68.0

The value of the expression 20.0 * (9.0/5) + 32.0 is: A) 68.0 B) 52.0 C) expression has a syntax error so there is no value D) 32.0 E) an incorrect expression, the / should be %

52.0

The value of the expression 20.0 * (9/5) + 32.0 is: A) 68.0 B) 52.0 C) incorrect expression so there is no value D) 32.0 E) incorrect expression , the / should be %

False

To put a character into a cstring constant that causes the output to continue on the next line, insert the escape sequence \t into the string constant. A) True B) False

totalWeight

Which is not a C++ keyword? A) while B) totalWeight C) double D) if

Automatic garbage collection

Which of the following does C++ not support? A) Support for object-oriented programming B) Classes C) Global functions D) Automatic garbage collection E) Traditional programming techniques

int namespace(0);

Which of the following is not a legal definition? (Consider each line to be in a different scope so there is no multiple definition of identifiers.) A) int count = 0, limit = 19; B) int count(0), limit(19); C) int count = 0, limit(19); D) int limit = 19; E) int namespace(0);

real

Which of the following is not built into the C++ language: A) bool B) real C) short D) int E) long

rateOfSpeed

Which of the following is the best choice for an identifier in a program? A) x B) rateOfSpeed C) data D) _abc

aa, bb, cc

Which of the following names might give the human reader difficulty about the data that is stored in them? A) aa, bb, cc B) speed, distance, time C) hypotenuse, leg1, leg2 D) velocity01, velocity02, velocity03 E) principal, interest, payment