Programming midterm
What is the correct way to write the following condition : 60 <= pass_grade <= 100
((pass_grade >= 60) && (pass_grade <= 100))
What is the correct way to write the condition y < x < z?
((y < x) && (x < z))
Which of the following boolean expressions tests to see if x is between 2 and 15 (including 2 and 15)?
(x >=2 && x <=15)
In selecting the most appropriate language it is useful to know
*if there is a specific target environment (say, a specific operating system). *how quickly the final code must run. *how much space the final code delivered can occupy.
What are the valid indexes for the array shown below? int myArray[25];
0 - 24
What numbers will the following code display on the computer screen? int x = 0; do { cout<< x <<endl; x=x+1; } while (x < 5);
0,1,2,3,4
Given the following code portion, what is the final value of sum? int sum = 0 ;for (int i=0 ; i < 5 ; i++){sum = sum + i;}cout << sum << endl;
10
How many times is "Hi" printed to the screen for (int i=0 ; i<10 ; i++) { cout <<"Hi \n"; }
10
How many times the following code prints "Computer"?int count = 0;while (count < 10){ cout << "Computer "; count++;}
10
How many times is "Hi" printed to the screen for (int i=0 ; i<=10 ; i++) { cout <<"Hi \n"; }
11
What is the output of the following code:int x[5] = {120, 200, 16};for (int i = 0; i < 5; i++) { cout << x[i] << " ";}
120 200 16 0 0
If you declare an array double list[4] = {3.4, 3.0, 3.5, 5.5}, list[1] is ________.
3.0
How many times will the computer print N in the following code? for (int N = 1; N < 10; N = N + 2) { cout << N << endl; }
5
How many times is "Hi" printed to the screen for (int i=1 ; i<10 ; i++) { cout <<"Hi \n"; }
9
To assign value to a declared variable in C++, programmer should use:
=
Boolean equality operator symbol is:
==
int A [ 20 ]; The fifth element index address is:
A [ 4 ]
What is wrong with the following code fragment? float scores[5]; for(int i=0; i<6;i++) { cout << "Enter a score\n"; cin >> scores[i]; }
Array indexes must be less than the size of the array
Function _______: is using the function in the main.
Call
Function _______: is informing the compiler about your function.
Declaration
Function _______: is writing the actual code of a function.
Definition
What is the third step of the system development life cycle?
Design
The flowchart shape for a binary decision is a(n) _______
Diamond
If X has the value of 60, what will the following code display? if (X > 60) cout << "Pass"; else cout << "Fail";
Fail
T/F Information System Development step: is developing a program specification, defining user requirements, and recommending a plan of action.
False
T/F The following array declaration is legal int grades[ 5 ]={0.1, 5.7, 0.2, 9.2, 0.3};
False
T/F: For loop is used to repeat single statement only.
False
T/F: If the task requires creative thoughts and human touch, then that makes the task candidate for automation.
False
T/F: If there is no default label in switch, an error message will appear.
False
T/F: In do-while loop, the boolean expression is checked before the body has been executed
False
T/F: In while loop, the boolean expression is checked after the body has been executed
False
T/F: Most of the lines in C++ program end with this sign ' } '
False
T/F: The break statement ends the whole program
False
T/F: The original program in a high level language called object code
False
T/F: The result of pow(2,3) is the same as pow(3,2).
False
T/F: The standard set of vocabulary for pseudocode is specific and detailed.
False
T/F: The translated program in machine language called source code
False
T/F: The variables you pass to the function when the function is called are : parameters.
False
T/F: char letters[15]; The index of the last element in the array is: 15
False
T/F: cin and cout are two terms of the same meaning
False
T/F: int Quiz [4] ; It is legal to assign 6.5 to the first element in the array as below: Quiz [ 0 ] = 6.5 ;
False
T/F: with cout, you can output variables values only.
False
T/F:The elements of an array must be integers.
False
\t is used with cout to insert a new text
False
______ includes data, people, procedures, hardware, and software that help achieving a common goal
Information System
What is the sixth step of the system development life cycle?
Maintenance and Evaluation
Which of the following is true for a void function?
Nothing is returned.
The flowchart shape for a terminate is a(n) _______
Oval
If X has the value of 60, what will the following code display? if (X >= 60) cout << "Pass"; else cout << "Fail";
Pass
What is the first step of the system development life cycle?
Problem and Opportunity Identification
What is the fifth step of the system development life cycle?
Testing and Installation
T/F: A variable is a memory address where data can be stored and changed
True
T/F: For loop is good for numeric calculations
True
T/F: Functions may have no value to be returned in some cases.
True
T/F: The following array declaration is legal double scores[ 3 ]={0.1, 0.2, 0.3};
True
T/F: The following two expressions are the same: x1+x2*x3 x1 + x2 * x3
True
T/F: The variables in the function declaration and definition are called parameter
True
T/F: \t is used with cout to insert a tab
True
T/F: function naming rules follow variable naming rules
True
T/F: int x[20]; The index of the last element in the array is: 19
True
T/F: switch statements can be converted into nested if-else statements
True
To display the output in a new line in C++, the programmer should use:
\n
The condition in the do-while loop is written _____________________ the loop body.
after
What C++ variable type should be used in the program deceleration for the following value ( ' k ' )
char
Which of the following lines correctly reads a value from the keyboard and stores it in the variable named myFloat?
cin >> myFloat;
The C++ keyword that used to display output on the screen is:
cout
To output X value
cout >> X;
Which of the following is a legal call to the displayOutput function?void displayOutput(int total);
displayOutput(myTotal);
Which loop type always executes at least once?
do-while
iostream is to end the main function
false
What C++ variable type should be used in the program deceleration for the following value ( 0.099 )
float
What C++ variable type should be used in the program deceleration for the following value ( 3.59 )
float
Declare float array of five elements, then ask the user to input the values of the elements. Choose the correct code portion.
float arr[5]; for (int i=0; i<5; i++) { cin>>arr[i]; }
If you need to write a function that will compute the cost of some candy, where each piece costs $ 1.5, which would be an appropriate function declaration?
float calculateCost(int count);
To assign the value (8.96) in C++ variable, the variable type should be:
float or double
Which of the following statements can be used to code a loop whose statements you want repeat 10 times?
for while all of the answers do - while
Which of the following will ask the user to input all the elements of the array? (Assume the size of the array is 10). cin >> array; for(i=0 ; i < 10 ; i++) cin >> array[10];
for (i=0 ; i < 10 ; i++) cin >> array[i];
Loops in C++ such as:
for, while and do-while
C++ is :
high-level language
Which of the following are allowed in the third section of the for loop statement?
i=i+2 any of the answers i++ i-- i=i-1
If X has the value of 60, what will the following code display?
if (X < 60) cout << "Fail"; else cout << "Pass";
To compare two values, this is the correct statement:
if (X1 == X2)
What C++ variable type should be used in the program deceleration for the following value ( - 5 )
int
What C++ variable type should be used in the program deceleration for the following value ( 3 )
int
To assign values to integer array called children, which line is the correct one?
int children[ 3 ] = { 2 , 12 , 1 } ;
What is the output of the following code fragment if x is 15? if(x < 20) if(x <10) cout << "less than 10 "; else cout << "large\n";
large
When an action must be repeated, a ........... is used.
loop
The language that uses only 0s and 1s is :
machine language
Which of the following are valid function calls to the pow function?
pow(1.5 , 3.0);
in C++, % operator gives the result of:
remainder
Which of the following is not a valid variable name?
return
This variable name is not valid in C++:
sales-total
Given an array named scores with 25 elements, what is the correct way to access or use the 25th element?
scores[24]
Which of the following is a valid variable name?
tax3
In while loop, the Boolean expression is evaluated, If true:
the body of the loop is executed
In while loop, the Boolean expression is evaluated, If false:
the program skips to the line following the while loop
To use cin and cout in your program, you need first:
to include iostream and to use namespace std
In ................... loop, there might be cases when the loop should not run.
while
x ++ means:
x = x + 1
x -- means:
x = x -1
