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Question
[C++11]: Which of the following statements about pointer initialization and values is false?a. Prior C++11, the value specified for a null pointer was 0 or NULL.
b. When 0 is assigned to a pointer, it's converted to a pointer of the appropriate type.
c. The value 0 is the only integer value that can be assigned directly to a pointer variable without first casting the integer to a pointer type.
d. In the new standard, you should use the constant null_ptr to initialize a pointer instead of 0 or NULL.
Answer
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Related questions
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a. Command-line arguments.
b. Storing an extremely long string.
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a. Is a binary operator.
b. Returns the total number of elements in an array.
c. Usually returns a double.
d. Returns the total number of bytes in a variable.
Q:
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b. n is a nonconstant pointer to constant data.
c. n is a constant pointer to nonconstant data.
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A function that modifies an array by using pointer arithmetic such as ++ptr to process every value of the array should have a parameter that is:
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b. A nonconstant pointer to constant data.
c. A constant pointer to nonconstant data.
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Q:
To prevent modification of a built-in array's values when you pass the built-in array to a function:
a. The built-in array must be declared static in the function.
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d. The built-in array must be passed by reference.
Q:
When a compiler encounters a function parameter for a single-subscripted array of the form int a[], it converts the parameter to:
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b. An address.
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Q:
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Q:
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Q:
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b. Displaying all even element values in an array.
c. Incrementing the value stored in each element of the array.
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Q:
For which of the following operators does C++ not specify the order of evaluation of its operands?
a. +.
b. &&.
c. ,.
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Q:
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Q:
Which of the following is false?
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Q:
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Q:
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b. Can be assigned other values once they"ve been defined.
c. Must have unique identifiers.
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Q:
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b. The types of arguments/parameters in the list.
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Q:
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Q:
Consider the execution of the following for loop
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}
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Q:
If a variable is declared in the initialization expression of a for statement, then:
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Q:
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cout << x;
}
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a. 6
b. 12
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Q:
Variables are also known as:
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b. lvalues, and cannot be used as rvalues.
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d. Constant variables.
Q:
The expression if (num != 65) cannot be replaced by:
a. if (num > 65 || num < 65)
b. if (!(num == 65))
c. if (num " 65)
d. if (!(num " 65))
Q:
Assuming that x and y are equal to 3 and 2, respectively, after the statement x -= y executes, the values of x and y will be:a. x: 5; y: 3b. x: 3; y: -1c. x: 3; y: 5d. x: 1; y: 2
Q:
What is the final value of x after performing the following operations?
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double y{6};
double z{14};
y = x / z;
x = 5.5 * y;
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b. 5.5.
c. 5.
d. 8.
Q:
How many times will the following loop print hello?
i = 1;
while (i <= 10) {
cout << "hello";
}
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b. 9.
c. 10.
d. An infinite number of times.
Q:
A default constructor has how many parameters?
a. 0.
b. 1.
c. 2.
d. Variable number.