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

C Interview Questions

Questions Answers Views Company eMail

What are the advantages of using Unions?

IBS,

1170

How do you print an address?

TCS,

1323

In header files whether functions are declared or defined?

TCS,

1 1924

What are Macros? What are its advantages and disadvantages?

TCS,

1216

What are the differences between Structures and Arrays?

TCS,

1271

What is static identifier?

TCS,

1278

How can you determine the size of an allocated portion of memory?

Aspire, Infogain,

1360

Is it better to use malloc() or calloc()?

Aspire, Infogain,

1172

What is the difference between NULL and NUL?

Aspire, Infogain,

1351

What is the difference between a string copy (strcpy) and a memory copy (memcpy)? When should each be used?

Aspire, Infogain,

1183

What will the preprocessor do for a program?

Aspire, Infogain,

1116

When should a far pointer be used?

Aspire, Infogain,

1182

What do the functions atoi(), itoa() and gcvt() do?

Aspire, Infogain,

1245

What is a null pointer assignment error? What are bus errors, memory faults, and core dumps?

Aspire, Infogain,

1482

Which header file should you include if you are to develop a function which can accept variable number of arguments?

TCS, TISL,

1457

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Un-Answered Questions { C }

Differentiate between null and void pointers.

1226

Which is better malloc or calloc?

1155

How can type-insensitive macros be created?

1212

What is the difference between class and object in c?

1236

4-Take two sets of 5 numbers from user in two arrays. Sort array 1 in ascending and array 2 in descending order. Perform sorting by passing array to a function mySort(array, sortingOrder). Then multiply both the arrays returned from function, using metric multiplication technique in main. Print result in metric format.

2239

What is the difference between a function and a method in c?

1130

What are the restrictions of a modulus operator?

1163

How can you check to see whether a symbol is defined?

1140

What is the process to generate random numbers in c programming language?

1216

what is the structure pointer?

2175

What are different types of operators?

1095

What does typedef struct mean?

1161

What is wrong with this program statement?

1080

why do some people write if(0 == x) instead of if(x == 0)?

1122

Explain what are its uses in c programming?

1124

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