c interview questions - Wikitechy https://www.wikitechy.com/interview-questions/tag/c-interview-questions/ Interview Questions Tue, 14 Sep 2021 06:13:13 +0000 en-US hourly 1 https://wordpress.org/?v=6.9.4 https://www.wikitechy.com/interview-questions/wp-content/uploads/2025/10/cropped-wikitechy-icon-32x32.png c interview questions - Wikitechy https://www.wikitechy.com/interview-questions/tag/c-interview-questions/ 32 32 Which of the following cannot be inherited ? https://www.wikitechy.com/interview-questions/programming/which-of-the-following-cannot-be-inherited/ https://www.wikitechy.com/interview-questions/programming/which-of-the-following-cannot-be-inherited/#respond Fri, 27 Aug 2021 00:23:45 +0000 https://www.wikitechy.com/interview-questions/?p=2571

Which of the following cannot be inherited ?

A. Friend

B. Static

C. Destructor

D. Constructor

Answer : C. Destructor

Explanation :

  • Friend Class – A friend class can access private and protected members of other class in which it is declared as friend. It is sometimes useful to allow a particular class to access private members of other class.
  • Constructor – A constructor is a member function of a class which initializes objects of a class. In C++, Constructor is automatically called when object (instance of class) create. It is special member function of the class.
  • Static – Static categories are sealed and thus can’t be transmissible. They can not inherit from any category except Object. Static categories cannot contain associate instance constructor. but, they will have a static builder.
  • Destructor – Destructor is a member function which destructs or deletes an object.
]]> https://www.wikitechy.com/interview-questions/programming/which-of-the-following-cannot-be-inherited/feed/ 0 Tarun wants to write code for his computer class homework but he had misheard the teacher and only can recollect remembering this 4 words. Which of the following is what he couldn’t have had heard ? https://www.wikitechy.com/interview-questions/programming/tarun-wants-to-write-code-for-his-computer-class-homework-but-he-had-misheard-the-teacher-and-only-can-recollect-remembering-this-4-words-which-of-the-following-is-what-he-couldnt-have-had-h/ https://www.wikitechy.com/interview-questions/programming/tarun-wants-to-write-code-for-his-computer-class-homework-but-he-had-misheard-the-teacher-and-only-can-recollect-remembering-this-4-words-which-of-the-following-is-what-he-couldnt-have-had-h/#respond Fri, 27 Aug 2021 00:17:49 +0000 https://www.wikitechy.com/interview-questions/?p=2568

Tarun wants to write code for his computer class homework but he had misheard the teacher and only can recollect remembering this 4 words. Which of the following is what he couldn’t have had heard?

A. Distributive

B. Multilevel

C. Multiple

D. Hierarchical

Answer : A. Distributive

Explanation:

Multiple Inheritance:

  • It refers to the concept of one class extending (Or inherits) more than one base class. The inheritance we learnt earlier had the concept of one base class or parent. The problem with “multiple inheritance” is that the derived class will have to manage the dependency on two base classes.
Multiple Inheritance

Multilevel Inheritance:

  • When a class extends a class, which extends anther class then this is called multilevel inheritance. For example class C extends class B and class B extends class A then this type of inheritance is known as multilevel inheritance.
Multilevel Inheritance

Hierarchical Inheritance:

  • When more than one classes inherit a same class then this is called hierarchical inheritance. For example class B, C and D extends a same class A.
Hierarchical Inheritance
]]> https://www.wikitechy.com/interview-questions/programming/tarun-wants-to-write-code-for-his-computer-class-homework-but-he-had-misheard-the-teacher-and-only-can-recollect-remembering-this-4-words-which-of-the-following-is-what-he-couldnt-have-had-h/feed/ 0 Write a function that takes an integer array as an input and find the largest number in the array. You cannot sort array or use any API or searching needs ? https://www.wikitechy.com/interview-questions/cpp/write-a-function-that-takes-an-integer-array-as-an-input-and-find-the-largest-number-in-the-array-you-cannot-sort-array-or-use-any-api-or-searching-needs/ https://www.wikitechy.com/interview-questions/cpp/write-a-function-that-takes-an-integer-array-as-an-input-and-find-the-largest-number-in-the-array-you-cannot-sort-array-or-use-any-api-or-searching-needs/#respond Mon, 12 Jul 2021 22:02:37 +0000 https://www.wikitechy.com/interview-questions/?p=358 ...]]> Write a function that takes an integer array as an input and find the largest number in the array. You cannot sort array or use any API or searching needs ? 
#include<iostream>
using namespace std;

int main()
{
int name[5],big,i;

for(i=0; i<=4; i++) {
cout << "Enter a value" << i << ":";
cin >> name[i];
}
cout << "name contains:";
for(i=0; i<=4; i++) {
cout << name[i]<< "\n";
}

big = name[0];
for(i = 0; i <= 4; i++) {
if(name[i] > big)
big = name[i];
}

cout << "The Bigest Number::" << big << endl;

return 0;
}

]]> https://www.wikitechy.com/interview-questions/cpp/write-a-function-that-takes-an-integer-array-as-an-input-and-find-the-largest-number-in-the-array-you-cannot-sort-array-or-use-any-api-or-searching-needs/feed/ 0 What is the Output ? https://www.wikitechy.com/interview-questions/c/what-is-the-output/ https://www.wikitechy.com/interview-questions/c/what-is-the-output/#respond Mon, 12 Jul 2021 20:01:05 +0000 https://www.wikitechy.com/interview-questions/?p=315

What is the Output ?

main () 
  {
  char *p1="Name"; 
  char *p2; 
  p2=(char *)malloc(20); 
  while(*p2++=*p1++); 
  printf("%s\n",p2); 
  }

Answer : NULL

  • We are incrementing the pointers p1,p2.
  • When it reached the end of the string, *p2 points to NULL.
  • We have lost the address of the starting position.
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