C Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

C Interview Questions

Questions Answers Views Company eMail

Write a C/C++ program that connects to a MySQL server and checks if the InnoDB plug-in is installed on it. If so, your program should print the total number of disk writes by MySQL

1386

write a program to find the given number is prime or not

Accenture, Vasutech,

2 3817

HOW TO SOLVE A NUMERICAL OF LRU IN OS ??????

2253

What is C++

4 4144

write a c programming using command line argument,demonstrate set operation(eg;union,intersection,difference) example output is c:>setop 12 34 45 1 union 34 42 66 c:>setop 12 34 1 42 66 c:>setop 12 34 diff 12 56 67 78 setop 12 34

1618

You have given 2 array. You need to find whether they will create the same BST or not. For example: Array1:10 5 20 15 30 Array2:10 20 15 30 5 Result: True Array1:10 5 20 15 30 Array2:10 15 20 30 5 Result: False One Approach is Pretty Clear by creating BST O(nlogn) then checking two tree for identical O(N) overall O(nlogn) ..we need there exist O(N) Time & O(1) Space also without extra space .Algorithm ?? DevoCoder guest Posted 3 months ago # #define true 1 #define false 0 int check(int a1[],int a2[],int n1,int n2) { int i; //n1 size of array a1[] and n2 size of a2[] if(n1!=n2) return false; //n1 and n2 must be same for(i=0;ia1[i+1]) && (a2[i]>a2[i+1]) ) ) return false; } return true;//assumed that each array doesn't contain duplicate elements in themshelves }

Facebook,

2702

How to add two numbers without using semicolon at runtime

2 6564

how to write a program which adds two numbers without using semicolon in c

2 5532

void main() { for(; 0 ;) ... { printf("hello"); ... } getch(); }

1 2953

which of 'arrays' or 'pointers' are faster?

5 10053

void main() { int x=25,y=32; clrscr(); x=x++ + y++; y=++x + ++y; printf("%d%d",x,y); }

5 6145

1.int a=10; 2.int b=20; 3. //write here 4.b=30; Write code at line 3 so that when the value of b is changed variable a should automatically change with same value as b. 5.

1648

which operator is known as dummy operator in c?

Wipro,

2 11846

why array index always starts from zero??

TCS,

4 6075

all c language question

Wipro,

1858

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Un-Answered Questions { C }

What are 3 types of structures?

582

How will you declare an array of three function pointers where each function receives two ints and returns a float?

767

what is the difference between 123 and 0123 in c?

706

What is void main () in c?

720

How are portions of a program disabled in demo versions?

736

What is define c?

561

What is the equivalent code of the following statement in WHILE LOOP format?

752

Explain Function Pointer?

675

What does stand for?

582

What are valid operations on pointers?

656

What is the difference between union and structure in c?

560

What is a constant?

626

Explain how can you tell whether a program was compiled using c versus c++?

567

What functions are used in dynamic memory allocation in c?

580

What are types of preprocessor in c?

609

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