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

C Interview Questions

Questions Answers Views Company eMail

What does the function toupper() do?

1137

Is it possible to initialize a variable at the time it was declared?

1223

Describe the order of precedence with regards to operators in C.

1051

What is the difference between the = symbol and == symbol?

1129

What is a nested loop?

1138

What is the modulus operator?

1221

What does the characters “r” and “w” mean when writing programs that will make use of files?

1486

Can the “if” function be used in comparing strings?

1061

What could possibly be the problem if a valid function name such as tolower() is being reported by the C compiler as undefined?

1288

What is the difference between functions getch() and getche()?

1099

In C programming, what command or code can be used to determine if a number of odd or even?

1067

What is the difference between the expression “++a” and “a++”?

1236

What are variables and it what way is it different from constants?

1249

Describe how arrays can be passed to a user defined function

1300

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

1289

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Un-Answered Questions { C }

which of the following shows the correct hierarchy of arithmetic operations in C a) (), **, * or/,+ or - b) (),**,*,/,+,- c) (),**,/,*,+,- d) (),/ or *,- or +

1739

What are the different types of errors?

1144

‎How to define structures? · ‎

1093

write a c program to calculate sum of digits till it reduces to a single digit using recursion

3318

What will the preprocessor do for a program?

1081

What is indirection? How many levels of pointers can you have?

1152

application attempts to perform an operation?

1983

What header files do I need in order to define the standard library functions I use?

1063

What is formal argument?

1141

What is an example of structure?

1043

Which is the best website to learn c programming?

1083

Do you have any idea how to compare array with pointer in c?

1054

Write the Program to reverse a string using pointers.

1029

Given two strings S1 and S2. Delete from S2 all those characters which occur in S1 also and finally create a clean S2 with the relevant characters deleted.

1408

I heard that you have to include stdio.h before calling printf. Why?

1074

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