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

C Interview Questions

Questions Answers Views Company eMail

What is c programming structure?

1203

Are the variables argc and argv are always local to main?

1024

Can you please explain the difference between strcpy() and memcpy() function?

1071

What are c identifiers?

1094

What is define directive?

1155

Do you have any idea about the use of "auto" keyword?

1085

How many levels of pointers have?

1054

What are types of preprocessor in c?

1076

What is #error and use of it?

1285

Tell me is null always defined as 0(zero)?

1090

In which header file is the null macro defined?

1346

What is c preprocessor mean?

1318

What is file in c preprocessor?

1149

Do you know the difference between exit() and _exit() function in c?

1062

Should I use symbolic names like true and false for boolean constants, or plain 1 and 0?

1069

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Un-Answered Questions { C }

What are valid operations on pointers?

1201

Why do we use int main?

1103

What is sizeof array?

1060

When reallocating memory if any other pointers point into the same piece of memory do you have to readjust these other pointers or do they get readjusted automatically?

1273

write a c program to find the largest and 2nd largest numbers from the given n numbers without using arrays

2255

How is actual parameter different from the formal parameter?

1026

How do we make a global variable accessible across files? Explain the extern keyword?

1884

What is a double c?

988

HOW TO SOLVE A NUMERICAL OF LRU IN OS ??????

2698

What is modifier & how many types of modifiers available in c?

1032

How do I convert a string to all upper or lower case?

1122

How #define works?

1105

Write a program in "C" to calculate the root of a quadratic equation ax^2+bx+c=0, where the value of a,b & c are known.

2236

What is n in c?

1054

Is it possible to pass an entire structure to functions?

998

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