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

C Interview Questions

Questions Answers Views Company eMail

can we store values and addresses in the same array? explain

TCS,

3 12246

what is the difference between NULL('\0') and 0?

Microsoft,

14 21130

IS it possible to define a zero sized array in c.if it is possible how can the elements of that array can be accessed.array index starts from zero,if it is possible to define zero sized array how can be its first element can be accesseed.

TCS,

5 8426

what is function pointer?

Wipro,

2 5665

write a c program to convert fahrenheit to celsius?

TCS,

4 13510

There is a mobile keypad with numbers 0-9 and alphabets on it. take input of 7 keys and then form a word from the alphabets present on those keys.

3740

Write a program to print distinct words in an input along with their count in input in decreasing order of their count

2611

write a program to convert a expression in polish notation (postfix) to inline (normal) something like make 723+* (2+3) x 7 (not sure) just check out its mainly printing expression in postfix form to infix

3471

Program to simulate second clock

2 4230

to convert a string without using decrement operater and string functions

1 3752

main() { printf("\n %d %d %d",sizeof('3'),sizeof("3"),sizeof(3)); }

6 12711

What is the difference between i++ and i+1 ?(in terms of memory)

HCL,

3 12538

Difference between for loop and while loop?

1 4769

1 1 1 1 2 1 1 3 3 1 1 4 6 4 1

1 3330

1 1 1 1 2 1 1 3 3 1 1 4 6 4 1

3 4314

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Un-Answered Questions { C }

What is string concatenation in c?

1144

What are valid operations on pointers?

1264

What is the size of a union variable?

1104

Which driver is a pure java driver

1693

What is the difference between single charater constant and string constant?

1141

Write a programme using structure that create a record of students. The user allow to add a record and delete a record and also show the records in ascending order.

2155

Explain how can I make sure that my program is the only one accessing a file?

1281

Write a program to check whether a number is prime or not using c?

1112

What are the main characteristics of c language describe the structure of ac program?

1268

What is structure and union in c?

1209

How can you call a function, given its name as a string?

1212

What are integer variable, floating-point variable and character variable?

1299

Why is c called c not d or e?

1146

Why can't I perform arithmetic on a void* pointer?

1161

What is advantage of pointer in c?

1252

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