Pregunta 1
Pregunta
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.
Pregunta 2
Pregunta
Which line of code below will generate a segmentation fault error when it compiles?
Respuesta
-
scanf("format", &var1, &var2);
-
scanf("format", &var1, &var2)
-
scanf("format", var1, var2);
-
scanf("format", var1, var2)
Pregunta 3
Pregunta
When reading a string with scanf, an & is required.
Pregunta 4
Pregunta
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!\n\n");
9 }
10 fscanf (fptr1, "%d", memes);
Respuesta
-
3, 6, 10
-
3, 10
-
3, 6, 8
-
8, 10
Pregunta 5
Pregunta
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))
Pregunta 6
Pregunta
[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++
Pregunta 7
Pregunta
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].
Pregunta 8
Pregunta
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.
Pregunta 9
Pregunta
<< --- [blank_start]Insertion Operator[blank_end]
>> --- [blank_start]Extraction Operator[blank_end]
Respuesta
-
Insertion Operator
-
Extraction Operator
-
Double Arrow Operator
Pregunta 10
Pregunta
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]
Pregunta 11
Pregunta
A function prototype needs a semicolon to terminate it.
Pregunta 12
Pregunta
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.
Pregunta 13
Pregunta
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];
Pregunta 14
Pregunta
A struct must be terminated with a semicolon before the int main().
Pregunta 15
Pregunta
All members of a struct are private.
Pregunta 16
Pregunta
A constructor function has a return type.
Pregunta 17
Pregunta
The dot (.) operator is used in classes to access class member data and functions.
Pregunta 18
Pregunta
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";
}