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

1785

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

Accenture, Vasutech,

2 4678

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

2652

What is C++

4 5399

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

2128

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,

3142

How to add two numbers without using semicolon at runtime

2 7537

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

2 6567

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

1 3613

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

5 11801

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

5 7519

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.

2114

which operator is known as dummy operator in c?

Wipro,

2 12777

why array index always starts from zero??

TCS,

4 7349

all c language question

Wipro,

2394

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Un-Answered Questions { C }

What are the application of void data type in c?

1149

Explain how can you determine the size of an allocated portion of memory?

1059

What is wrong with this program statement? void = 10;

1221

What is array in c with example?

1187

How can I use a preprocessorif expression to ?

1015

What is the difference between struct and typedef struct in c?

1097

What is the advantage of a random access file?

1145

What is void c?

1025

Explain what is meant by high-order and low-order bytes?

1010

What are the application of c?

1060

a number whose only prime factors are 2,3,5, and 7 is call humble number,,write a program to find and display the nth element in this sequence.. sample input : 2,3,4,11,12,13, and 100.. sample output : the 2nd humble number is 2,the 3rd humble number is 3,the 4th humble number is ,the 11th humble number is 12, the 12th humble number is 14, the 13th humble number is 15, the 100th humble number is 450.

5024

What is the purpose of void in c?

1004

How can I split up a string into whitespace-separated fields?

1020

Write a program to print all permutations of a given string.

1144

What is the heap?

1169

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