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

C Interview Questions

Questions Answers Views Company eMail

Where in memory are my variables stored?

1189

When should I declare a function?

1148

When should the register modifier be used? Does it really help?

973

Are there any problems with performing mathematical operations on different variable types?

1044

Can include files be nested?

1122

Can stdout be forced to print somewhere other than the screen?

1052

How do you redirect a standard stream?

1115

Why should I prototype a function?

1207

How reliable are floating-point comparisons?

1105

When would you use a pointer to a function?

1055

What is the difference between array_name and &array_name?

1308

explain what are pointers?

1022

When should a type cast be used?

1023

Can a variable be both const and volatile?

1139

Is it better to use a macro or a function?

1167

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Un-Answered Questions { C }

What should malloc(0) do? Return a null pointer or a pointer to 0 bytes?

1086

Can include files be nested? How many levels deep can include files be nested?

1175

What are the uses of null pointers?

1130

How can a string be converted to a number?

1023

What are two dimensional arrays alternatively called as?

1191

How do you define CONSTANT in C?

1286

What is c programming structure?

1211

How can I insert or delete a line (or record) in the middle of a file?

1022

What is hashing in c?

1165

In which header file is the null macro defined?

1351

What are the different types of endless loops?

1082

What is line in c preprocessor?

1066

any limit on the number of functions that might be present in a C program a) max 35 functions b) max 50 functions c) no limit d) none of the above

1054

What is the general form of #line preprocessor?

1005

Why use int main instead of void main?

1125

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