FEH C/C++ Quiz

Question 1

In C/C++, using the printf command to display something to the command terminal is the same as using the fprintf command except the fprintf command has [blank_start]stdout[blank_end] as the first argument.

Accepted Answer

stdout

Question 2

Which line of code below will generate a segmentation fault error when it compiles?

Accepted Answer

scanf("format", var1, var2);

Answer

scanf("format", &var1, &var2);

Answer

scanf("format", &var1, &var2)

Answer

scanf("format", var1, var2)

Question 3

When reading a string with scanf, an & is required.

Answer

true

Question 4

In the following code, which line(s) contains an error?

1     int main()
2     {
3     FILE fptr1;
4     int memes;
5     fptr = fopen("Exan.txt","r");
6     if (*fptr1 != NULL)
7     {
8      printf("File opened successfully!

");
9      }
10    fscanf (fptr1, "%d", memes);

Accepted Answer

3, 6, 10

Answer

3, 10

Answer

3, 6, 8

Answer

8, 10

Question 5

The following loop will stop executing when the end of file condition is detected (assume inptr has been declared as a file pointer already):
while (!feof(inptr))

Answer

true

Question 6

[blank_start]&&[blank_end] --- This is the AND operator in C/C++
[blank_start]||[blank_end] --- This is the OR operator in C/C++
[blank_start]![blank_end] --- This is the NOT operator in C/C++
[blank_start]=[blank_end] --- This is the Assignment operator in C/C++
[blank_start]==[blank_end] --- This is the Equality operator in C/C++

Accepted Answer

==

Accepted Answer

=

Accepted Answer

!

Accepted Answer

||

Accepted Answer

&&

Question 7

When writing input and output in C++, it is necessary to write std:: before every cin and cout, unless you write [blank_start]using namespace std;[blank_end].

Accepted Answer

using namespace std;

Question 8

When writing in C++, it is necessary to use this symbol on occasion "::". Its name is the [blank_start]binary scope resolution[blank_end] operator.

Accepted Answer

binary scope resolution

Question 9

<< --- [blank_start]Insertion Operator[blank_end] >> --- [blank_start]Extraction Operator[blank_end]

Accepted Answer

Insertion Operator

Accepted Answer

Extraction Operator

Answer

Double Arrow Operator

Question 10

Please enter the C++ command to open a file named Santa.txt. Note: assume a file pointer named fin has already been created.

[blank_start]fin.open(“SANTA.txt");[blank_end]

Accepted Answer

fin.open(“Santa.txt");

Question 11

A function prototype needs a semicolon to terminate it.

Answer

true

Question 12

In the multidimensional array declared as in Christmas[3][4]; , The [3] refers to the number of columns, while the [4] refers to the number of rows.

Answer

true

Question 13

Pointer math:
Assume pointer elf has an address of 2000 points to a value of 10. Solve the following questions using C math and pointer math.
elf + 4 = [blank_start]2016[blank_end];
pow(*elf, 2) = [blank_start]100[blank_end];

Accepted Answer

2016

Accepted Answer

100

Question 14

A struct must be terminated with a semicolon before the int main().

Answer

true

Question 15

All members of a struct are private.

Answer

true

Question 16

A constructor function has a return type.

Answer

true

Question 17

The dot (.) operator is used in classes to access class member data and functions.

Answer

true

Question 18

Assume Claus is a pointer variable of the type of a struct that has already been declared. Assume Presents is a variable within the aforementioned struct that has a value of 20. When the code below executes, the line "Presents for all good boys and girls" will be printed to the screen.

if (Claus.Presents == 20) {
cout << "Presents for all good boys and girls\n";
}
else {
cout << "Naughty kids get coal!\n";
}

if (Claus.Presents == 20) {
cout << "Presents for all good boys and girls
";
}
else {
cout << "Naughty kids get coal!
";
}

Answer

true

FEH C/C++ Quiz

Perguntas do quiz (18)

Informações

Fale Conosco

O que você acha do novo visual?