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

C Interview Questions

Questions Answers Views Company eMail

how to find the kth smallest element in the given list of array elemnts.

Silicon,

8 24652

how to sort two array of characters and make a new array of characters.

Accenture,

1 5571

what is difference between ++(*p) and (*p)++

Accenture, HCL, IBM,

17 29795

what is difference between array of characters and string

Accenture, Nest,

18 48761

char ch=10;printf("%d",ch);what is the output

Accenture,

14 26707

char ch="{'H','I',0};printf("%s",ch);what is output

Accenture,

9 14383

which one is not preprocessor directive a)#if b)#elif c)#undef d)#pragma

Accenture, Infosys, TCS, Wipro,

16 26327

what will be the output: main(){char ch;int a=10;printf("%d",ch);}

Accenture, TCS, Wipro,

36 37160

value = 0xabcd; for (loop = 1; (value >> 1) & 1 | loop & 1; loop++) { foo(); if (loop & 1) value >>= 1; } how many times is foo() executed?

Google,

6 12862

class foo { public: static int func(const char*& p) const; }; This is illegal, why?

Google,

8 16981

how to estimate the disk access time? e.g. the time between read one byte and another byte in the disk.

Google,

3 12695

what is the hexidecimal number of 4100?

Google,

16 24289

give one ip, find out which contry

Google,

4 13589

What is C language Terminator?

TCS,

15 33284

program to find a smallest number in an array

Microsoft, Sony,

15 40629

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Un-Answered Questions { C }

what are the advantages of a macro over a function?

1146

What is the data segment that is followed by c?

1092

#include int main(){ int i=10; int *ptr=&i; *ptr=(int *)20; printf("%d",i); return 0; } Output: 20 can anyone explain how came the output is 20

1724

What is the use of header files?

1114

What is the purpose of the statement: strcat (S2, S1)?

1171

Why c language?

1077

How to get string length of given string in c?

1067

How can I send mail from within a c program?

1034

What is typeof in c?

1017

what is use of malloc and calloc?

1906

What type of function is main ()?

1046

write an interactive C program that will encode or decode a line of text.To encode a line of text,proceed as follows. 1.convert each character,including blank spaces,to its ASCII equivalent. 2.Generate a positive random integer.add this integer to the ASCII equivalent of each character.The same random integer will be used for the entire line of text. 3.Suppose that N1 represents the lowest permissible value in the ASCII code,and N2 represents the highest permissible value.If the number obtained in step 2 above(i.e.,the original ASCII equivalent plus the random integer)exceeds N2,then subtract the largest possible multiple of N2 from this number,and add the remainder to N1.Hence the encoded number will always fall between N1 and N2,and will therefore always represent some ASCII character. 4.Dislay the characters that correspond to the encoded ASCII values. The procedure is reversed when decoding a line of text.Be certain,however,that the same random number is used in decodingas was used in encoding.

3481

How many types of functions are there in c?

1146

What is zero based addressing?

1174

difference between Low, Middle, High Level languages in c ?

2086

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