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

C Interview Questions

Questions Answers Views Company eMail

What is the difference between macros and inline functions?

Global Edge, L&T,

5 12552

what is the output of the code and how? main() { int *ptr,x; x=sizeof(ptr); printf("%d",x); }

1 3927

How to write in a function declaration and in function call in which the function has 'n' number of varible or arguments?

2 4557

What is Generic pointer? What is the purpose of Generic pointer? Where it is used?

3 6240

what is the answer for it main() { int i; clrscr(); printf("%d",&i)+1; scanf("%d",i)-1; }

3 5756

Write a C/C++ program that connects to a MySQL server and checks intrusion attempts every 5 minutes. If an intrusion attempt is detected beep the internal speaker to alert the administrator. A high number of aborted connects to MySQL at a point in time may be used as a basis of an intrusion.

Drona Solutions, Infosys, Vodafone, Webyog,

2 11346

write a programe to find the factorial of given number using recursion

3 7787

write a programme to enter some number and find which number is maximum and which number is minimum from enterd numbers.

3 5129

FIND THE OUTPUT IF THE INPUT IS 5 5.75 void main() { int i=1; float f=2.25; scanf("%d%f",&i,&f); printf("%d %f",,i,f); } ANSWER IS 5 AND 2.25 WHY?

Wipro,

4 6974

void main() { char c; while(c=getchar()!='\n') printf("%d",c); } o/p=11 why?

Wipro,

8 13160

if we take a number as a char then can we manipulate(add, subtract) on this number

2 4227

In which category does main function belong??

5 7022

4) Write a program that takes a 5 digit number and calculates 2 power that number and prints it.

5 8172

what is an inline fuction??

2 4492

find the value of y y = 1.5x+3 for x<=2 y = 2x+5 for x>2

TCS,

1996

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Un-Answered Questions { C }

How can I list all of the predefined identifiers?

986

.main() { char *p = "hello world!"; p[0] = 'H'; printf("%s",p); }

1301

Is null always equal to 0(zero)?

1037

What are the different types of control structures in programming?

1136

Explain how can you restore a redirected standard stream?

1102

What are static variables in c?

1084

What is the best way to store flag values in a program?

1081

What does typedef struct mean?

1114

What is the meaning of ?

1040

What is c language used for?

988

What is assert and when would I use it?

1012

What is a const pointer?

1128

What are volatile variables in c?

953

Can you add pointers together? Why would you?

1129

What is meant by initialization and how we initialize a variable?

1051

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