Question 1

A function call is always an rvalue. True or false?

True
False

Answer

Correct Option: B

Question 2

In namespace foo, the function bar can access the variable x also declared in namespace foo? #include namespace foo { void bar() { x++; } int x; } int main(int argc, char** argv) { return 0; }

technology programming languages

True
False

Answer

Correct Option: B

Question 3

What is the value of y at the end of main? const int x = 5; int main(int argc, char** argv) { int x[x]; int y = sizeof(x) / sizeof(int); return 0; }

technology programming languages

0
5
undefined
2

AI Explanation

AI 1

To determine the value of y at the end of main, let's go through the code step by step:

const int x = 5;
int main(int argc, char** argv)
{
    int x[x];
    int y = sizeof(x) / sizeof(int);
    return 0;
}

In this code, we have a constant integer x initialized with the value of 5.

Next, we declare an array x with the size of x, which is 5. This means we are declaring an array with 5 elements.

Then, we calculate the value of y by dividing the size of the array x (which is 5 * sizeof(int)) by the size of an int (sizeof(int)).

The sizeof operator returns the size of a data type in bytes. In this case, sizeof(int) returns the size of an int in bytes.

Since the size of an int is typically 4 bytes, the size of the array x is 20 bytes (5 * 4).

Therefore, y is equal to the size of the array x (20 bytes) divided by the size of an int (4 bytes), which is 5.

Hence, the correct answer is B) 5.

Answer

Correct Option: B

Question 4

what is the output of the programme? #define ABC 20 #define XYZ 10 #define XXX ABC - XYZ void main() { int a; a = XXX * 10; printf("%d ", a); }

technology programming languages

20
10
100
-80

Answer

Correct Option: D

Question 5

what is the output? int a = 400; void main() { int b; b=(400 * 400)/ a ; printf("%d",b); }

technology programming languages

compilation error
garbage value
400
1

Answer

Correct Option: B

Question 6

Print the output of this program main() { int k = 5; if (++k < 5 && k++/5 || ++k <= 8); printf("%d\n", k); }

technology programming languages

5
7
8
garbage value

Explanation:

To solve this question, we need to understand the order of operations and logical operators.

The given program uses the if statement to check some conditions. If the conditions are met, it increases the value of k. Finally, it prints the value of k using printf.

The given expression can be broken down into three parts:

++k < 5
k++/5
++k <= 8

Let's evaluate each part:

++k < 5: The value of k is first incremented to 6. Then, this expression checks if 6 is less than 5. This is false, so the expression evaluates to false.
k++/5: The value of k is still 6. This expression divides 6 by 5 (integer division), which evaluates to 1. However, this expression is not used in the if statement because of short-circuiting.
++k <= 8: The value of k is now 7 (due to the previous increment). This expression checks if 7 is less than or equal to 8. This is true, so the expression evaluates to true.

Since the expression in the if statement evaluates to true, the code inside the if statement is executed. This code does nothing, so k remains 7. Finally, the value of k is printed using printf.

Therefore, the output of this program is:

The answer is: B. 7

Answer

Correct Option: B

Question 7

What is the result Integer i1=10; Integer i2=10; (i1==i2)-->result of this

technology programming languages

True
False

Answer

Correct Option: A

Question 8

What is result of the question Integer i1=10; Integer i2=10; (i1!=i2)-->result is

technology programming languages

True
False

Answer

Correct Option: A

Question 9

What is the result of this Integer i1=10; int i2=10; (i1==i2)-->result is

technology programming languages

True
False

Answer

Correct Option: A

Question 10

What is the result os this String s1="hi"; String s2="hi"; (s1==s2)-->returns

technology programming languages

true
false
compilation error
exception thrown at runtime

Answer

Correct Option: A

Question 11

String s1=new String("abc"); String s2=new String("abc"); (s1==s2)-->result is

technology programming languages

true
false
compilation error
exception thrown at runtime

Answer

Correct Option: B

Question 12

Integer i1=10; Integer i2=10; (i1.equals(i2++))-->result is

technology programming languages

true
false
compilation error
exception thrown at runtime

Answer

Correct Option: B

Question 13

LINQ is abbreviation of

technology programming languages

Language Integrated Query
Language Independent Query
Language Interrelated Query
None of the above

Answer

Correct Option: A

Question 14

In which version of .Net framework LINQ has been introduced

technology programming languages

2.0
3.0
3.5
4.0

Answer

Correct Option: C

Question 15

Features of LINQ

technology programming languages

Querying of in-memory collections
Abstraction layer of data sources
Object and Collection Initializers
Lambda expressions

Answer

Correct Option: A,B,C

Question 16

Features of LINQ

technology programming languages

Querying of in-memory collections
Abstraction layer of data sources
Object and Collection Initializers
Lambda expressions

Answer

Correct Option: A,B,C

Question 17

List Names = new List(); Names.Add("A"); Names.Add("B"); Names.Add("C"); var res = Names.Where(n => n == "D"); if (res == null) Console.WriteLine("res is null"); else Console.WriteLine("res is not null"); Console.Read(); What would be printed?

technology programming languages

res is null
res is not null
Run time error
None of the above

Answer

Correct Option: B

Question 18

List Names = new List(); Names.Add("A"); Names.Add("B"); Names.Add("C"); var res = Names.Where(n => n == "D"); res is the type of

technology programming languages

List
IEnumerable
List
IEnumerable

Answer

Correct Option: B

Question 19

Anonymous Types is a feature of LINQ

technology programming languages

True
False

Answer

Correct Option: B

Question 20

What will happen when you attempt to compile and run the following code? int Output = 10; boolean b1 = false; if((b1 == true) && ((Output += 10) == 20)) { System.out.println("We are equal " + Output); } else { System.out.println("Not equal! " + Output); }

technology programming languages

Compilation and output of "Not equal! 10".
Compilation and output of "Not equal! 20".
Compilation and output of "We are equal 10".
Compilation error, attempting to perform binary comparison on logical data type.

Answer

Correct Option: A

Description: programming languages Online Quiz - 104
Number of Questions: 20
Created by: Aliensbrain Bot
Tags: programming languages

programming languages Online Quiz - 104

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