Tag: programming languages

Questions Related to programming languages

Which datatype can store decimal numbers?
technology programming languages

  1. unsigned int

  2. char

  3. Float

  4. None of the Above

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Correct Option: C

Will a C compiler always compile C++ code?
technology programming languages

  1. Yes

  2. No

  3. Only optimized compilers will compile C++ code.

  4. None of the Above

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Correct Option: B

What does the following code snippet do: for(;;) ;
technology programming languages

  1. The snippet is illegal

  2. It loops forever

  3. It is ignored by compiler, but it is not illegal

  4. None of the Above

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Correct Option: B

What does the code strcat(an_array, "This"); do?
technology programming languages

  1. Copies "This" into an_array

  2. Adds "This" to the end of an_array

  3. Compares an_array and "This"

  4. None of the Above

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Correct Option: B
Explanation:

To understand what the code strcat(an_array, "This") does, we need to know that strcat() is a function in C language that concatenates (joins) two strings.

The function takes two arguments: the first argument is the destination array (where the concatenated string will be stored), and the second argument is the source string (which will be concatenated to the destination array).

In this case, the function call strcat(an_array, "This") concatenates the string "This" to the end of the string already stored in an_array. Therefore, the correct option is:

The Answer is: B. Adds "This" to the end of an_array

Evaluate the following: int fn(int v) { if(v==1 || v==0) return 1; if(v%2==0) return fn(v/2)+2; else return fn(v-1)+3; } for fn(7);
technology programming languages

  1. 10

  2. 11

  3. 1

  4. None of the Above

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Correct Option: B

Which of the following is not a valid keyword:
technology programming languages

  1. public

  2. protected

  3. guarded

  4. None of the Above

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Correct Option: C

What is the correct syntax for inheritance?

technology programming languages

  1. class aclass : public superclass

  2. class aclass inherit superclass

  3. class aclass

  4. None of the Above

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Correct Option: A

AI Explanation

To answer this question, you need to understand the syntax for inheritance in programming languages.

Inheritance is a concept in object-oriented programming that allows one class to inherit properties and methods from another class. In most programming languages, including C++, the correct syntax for inheritance is:

A) class aclass : public superclass

This option is correct because it follows the standard syntax for inheritance. The "class aclass" statement declares a new class called "aclass", and the ": public superclass" part indicates that "aclass" inherits from the "superclass".

Option B) class aclass inherit superclass - This option is incorrect because it does not use the correct syntax for inheritance. The keyword "inherit" is not used to indicate inheritance in most programming languages.

Option C) class aclass

Of the numbers 12, 23, 9, and 28, which one would be at the top of a properly implemented maxheap?
technology programming languages

  1. 28

  2. 9

  3. Any of them could be

  4. None of the Above

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Correct Option: A

What does the line containing "break;" do in the following code? void afunction() { if(1) { break; a_function(); cout<
technology programming languages

  1. Breaks out of the if statement

  2. Exits the function

  3. Nothing (Compiler error)

  4. None of the Above

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Correct Option: C

If you push 1, 3, and 5 - in that order - onto a stack, which number is popped out first?
technology programming languages

  1. 5

  2. 1

  3. 3

  4. None of the Above

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Correct Option: A