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

1830

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

Accenture, Vasutech,

2 4779

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

2701

What is C++

4 5578

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

2198

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,

3194

How to add two numbers without using semicolon at runtime

2 7658

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

2 6712

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

1 3697

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

5 11995

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

5 7696

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.

2162

which operator is known as dummy operator in c?

Wipro,

2 12895

why array index always starts from zero??

TCS,

4 7506

all c language question

Wipro,

2449

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Un-Answered Questions { C }

What are the different file extensions involved when programming in C?

1297

How pointer is different from array?

1091

Explain the use of #pragma exit?

1184

What is "Duff's Device"?

1175

How variables are declared in c?

1051

Explain about the functions strcat() and strcmp()?

1061

Why double pointer is used in c?

1048

Explain how do you determine whether to use a stream function or a low-level function?

1099

What is a void pointer? When is a void pointer used?

1066

What standard functions are available to manipulate strings?

1161

Is it better to use malloc() or calloc()?

1125

How can I determine whether a machines byte order is big-endian or little-endian?

1067

How can I write a function that takes a format string and a variable number of arguments?

1065

What is calloc in c?

1152

When c language was developed?

1068

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