COP1334 C++ Midterm (Ch. 3) – Flashcards
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+
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When this operator is used with string operands it concatenates them, or joins them together.
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data type of the variable
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When the final value of an expression is assigned to a variable, it will be converted to:
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left to right
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Associativity is either right to left or
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Ten
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The statement
cin >> setw(10) >> str;
will read up to this many characters into str
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7
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Which line in the following program will cause a compiler error?
1 #include
2 using namespace std;
3
4 int main()
5 {
6 const int MY_VAL = 99;
7 MY_VAL = 77;
8 cout << MY_VAL << endl;
9 return 0;
10 }
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fixed
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This stream manipulator forces cout to print the digits in fixed-point notation.
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Parentheses
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When converting some algebraic expressions to C++, you may need to insert ___________ that do not appear in the algebraic expression.
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number = number + 1;
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Which statement is equivalent to the following?
number += 1;
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x *= 2;
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Which statement is equivalent to the following?
x = x * 2;
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false
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The statement
cout << setprecision(5) << dollar << endl;
will output $5.00 to the screen.
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3 * 2
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In the following C++ statement, what will be executed first according to the order of precedence?
result = 6 - 3 * 2 + 7 - 10 / 2;
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True
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When C++ is working with an operator, it strives to convert the operands to the same type.
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(Parentheses)
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You can use these to override the rules of operator precedence in a mathematical expression.
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39
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What is the value of number after the following statements execute?
int number = 10;
number += 5;
number -= 2;
number *= 3;
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2
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What will the value of result be after the following statement executes?
result = 6 - 3 * 2 + 7 - 10 / 2;
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4.0
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What is the value of average after the following code executes?
double average;
average = 1.0 + 2.0 + 3.0 / 3.0;
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true
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The cin >> statement will stop reading input when it encounters a newline character.
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setw
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This manipulator is used to establish a field width for the value immediately following it.
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>>, <<
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The ______ operator always follows the cin object, and the ______ operator follows the cout object.
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-3
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Assume that x is an int variable. What value is assigned to x after the following assignment statement is executed?
x = -3 + 4 % 6 / 5;
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cin object
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The _________ causes a program to wait until information is typed at the keyboard and the Enter key is pressed.
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13
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What will the value of x be after the following statements execute?
int x = 0;
int y = 5;
int z = 4;
x = y + z * 2;
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overflows
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When a variable is assigned a number that is too large for its data type, it:
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getline(cin, address);
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Which statement will read an entire line of input into the following string object?
string address;
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cstdlib
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To use the rand() function, you must #include this header file in your program.
