C Interview Questions
Questions Answers Views Company eMail

logic for generating all the combinations of the any number of given letters. ex::::::::: if a,b,c,d are given the o/p should be abcd,dcba,dbac,bcad,................ 4*3*2*1 combinations............

Infosys,

2 5380

What is a Genralised LInked List?? Please give a detailed explation of it..

1 1780

what is ur strangth & weekness

NetEnrich, Cognizant, LG Soft,

1042




Explain following declaration int *P(void); and int (*p)(char *a);

3 14058

What is external and internal variables What is dynamic memory allocation what is storage classes in C

3 11125

can anyone please tell me wat is backlogs... i was looking for the job openings where i read this.. eligibility criteria minimum 70% in degree without backlogs. is that arrear.. if so is it standing arrear or history of arrears... please help me...

TCS, CTS, Indian Navy, SSB, Microsoft, L&T, TCE,

11 48360

what is the return value (status code) of exit() function.... what the arguments(integer value) passed to it means....

TCS,

1 2760

how to find sum of digits in C?

Infosys, CTS,

21 22449




HOW TO SWAP TWO NOS IN ONE STEP?

Satyam,

16 12321

how memory store byte

Huawei,

4 4861

biggest of two no's with out using if condition statement

8 7061

difference of two no's with out using - operator

7 4747

what is the stackpointer

2 2797

how to find the binary of a number?

Infosys,

10 7983

Can a binary search tree be used as an index? If yes, how? Explain

TCS,

1719


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Un-Answered Questions { C }

Between macros and functions,which is better to use and why?

815


all c language question

992


can anyone suggest some site name..where i can get some good data structure puzzles???

913


Why is it important to memset a variable, immediately after allocating memory to it ?

813


How to draw the flowchart for structure programs?

6462






What is the difference between declaring a variable by constant keyword and #define ing that variable?

1581


Can you explain what keyboard debouncing is, and where and why we us it? please give some examples

945


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

1893


find out largest elemant of diagonalmatrix

840


why wipro wase

1055


Write the program that calculates and prints the average of several integers. Assume that the last value read is sentinel 9999.

1819


You have given 2 array. You need to find whether they will create the same BST or not. For example: Array1:10 5 20 15 30 Array2:10 20 15 30 5 Result: True Array1:10 5 20 15 30 Array2:10 15 20 30 5 Result: False One Approach is Pretty Clear by creating BST O(nlogn) then checking two tree for identical O(N) overall O(nlogn) ..we need there exist O(N) Time & O(1) Space also without extra space .Algorithm ?? DevoCoder guest Posted 3 months ago # #define true 1 #define false 0 int check(int a1[],int a2[],int n1,int n2) { int i; //n1 size of array a1[] and n2 size of a2[] if(n1!=n2) return false; //n1 and n2 must be same for(i=0;ia1[i+1]) && (a2[i]>a2[i+1]) ) ) return false; } return true;//assumed that each array doesn't contain duplicate elements in themshelves }

1885


Write the test cases for checking a variable having value in range -10.0 to +10.0?

924


In cryptography, you could often break the algorithm if you know what was the original (plain) text that was encoded into the current ciphertext. This is called the plain text attack. In this simple problem, we illustrate the plain text attack on a simple substitution cipher encryption, where you know each letter has been substituted with a different letter from the alphabet but you don’t know what that letter is. You are given the cipherText as the input string to the function getwordSets(). You know that a plain text "AMMUNITION" occurs somewhere in this cipher text. Now, you have to find out which sets of characters corresponds to the encrypted form of the "AMMUNITION". You can assume that the encryption follows simple substitution only. [Hint: You could use the pattern in the "AMMUNITION" like MM occurring twice together to identify this]

1168


Take an MxN matrice from user and then sum upper diagonal in a variable and lower diagonal in a separate variables. Print the result

581