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

1873

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

Accenture, Vasutech,

2 4841

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

2746

What is C++

4 5733

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

2250

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,

3236

How to add two numbers without using semicolon at runtime

2 7736

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

2 6842

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

1 3755

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

5 12143

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

5 7811

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.

2213

which operator is known as dummy operator in c?

Wipro,

2 12998

why array index always starts from zero??

TCS,

4 7626

all c language question

Wipro,

2487

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Un-Answered Questions { C }

Once I have used freopen, how can I get the original stdout (or stdin) back?

1119

What is the difference between exit() and _exit() function in c?

1129

What is c preprocessor mean?

1373

What is a nested loop?

1178

List the difference between a 'copy constructor' and a 'assignment operator' in C?

1138

What is the difference between ++a and a++?

1271

What is structure packing in c?

1139

What is build process in c?

1203

What is pointer & why it is used?

1172

What is adt in c programming?

1225

how can f be used for both float and double arguments in printf? Are not they different types?

1121

Can we use visual studio for c?

1152

Explain enumerated types in c language?

1103

Explain how does flowchart help in writing a program?

1168

Why do we need a structure?

1081

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