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 maximum number of concurrent threads that the InnoDB plug-in can create.

IBM,

1897

Go through this linked list concept.While traversing through the singly linked list sometimes the following code snippet "while(head != NULL)" is used and other times "while(head->link != NULL)"is used(Here head is the pointer pointing to the first node,node has two parts data part and link part).What is the difference between head != NULL and Head->link != NULL and in which situation are they used?

Oracle,

1 3800

Which weighs more, a gram of feathers or a gram of gold?

2 4926

There are 8 billiard balls, and one of them is slightly heavier, but the only way to tell was by putting it on a weighing scale against another. What's the fewest number of times you'd have to use the scale to find the heavier ball?

Microsoft, TCS,

5 9006

I didn't count the ducks that I saw in line, but I do remember that one duck was in front of two ducks, another duck behind two ducks. How many ducks did I see?

2 6367

program in c to print 1 to 100 without using loop

Wipro,

9 11382

. Write a program to get a string and to convert the 1st letter of it to uppercase

HTC,

2 6453

what is a function method?give example?

2330

Code for calculating square root without using library function, of math.h

IBM,

4 27875

main() { int a; a=++100; printf("%d",a); getch(); }

4 6074

print the palindrome numbers in between 0 to n

1 3495

write a program to reverse a every alternetive words in a string in a place. EX: Input is "this is the line of text" Output should be "shit is eht line fo text" Please any one tell me code for that.

TCS,

2053

write a c program that if the given number is prime, and their rearrangement(permute) of that number is also prime. Ex: Input is "197" is prime Output: 791,917,179 is also prime. Please any one tell me tha code for that

3 5631

void main(int n) { if(n==0) return; main(--n); printf("%d ",n); getch(); } how it work and what will be its output...............it any one know ans plz reply

2719

What is the difference between specifying a constant variable like with constant keyword and #define it? i.e what is the difference between CONSTANT FLOAT A=1.25 and #define A 1.25

1952

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Un-Answered Questions { C }

code for quick sort?

1991

how can use subset in c program and give more example

1949

Why c is known as a mother language?

1050

What is the difference between array and structure in c?

1106

What are header files why are they important?

1059

What does s c mean on snapchat?

1055

What is file in c preprocessor?

1100

What is equivalent to ++i+++j?

1053

What is the difference between formatted&unformatted i/o functions?

1018

What is static and volatile in c?

1190

1. Write a function to display the sum of two numbers in the following ways: By using (i) pass by value (ii) pass by address a. function with argument and with return value b. function with argument and without return value c. without argument , with return value d. without argument , without return value Note: Use pass by address.

2768

What are the types of pointers?

1051

Tell me can the size of an array be declared at runtime?

1002

What are multibyte characters?

1068

What is the purpose of realloc()?

1101

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