C Interview Questions
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who will call your main function in c under linux?

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Write a Program to print this triangle: * ** * **** * ****** * ******** * ********** use two nested loops.


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What is the difference between null pointer and void pointer

CTS, Manforce, MAQ Software,

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why r u join this company? give solid resons.

TCS, IBM, Infosys,

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Write a C program that computes the value ex by using the formula ex =1+x/1!+x2/2!+x3+3!+………….

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what is the advantage of using SEMAPHORES to ORDINARY VARIABLES???


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main() { float a=8.8; double b=8.8; if(a==b) printf("Equal"); else printf("not equal"); getch(); } what is the output? with reason


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plssssss help !!....using array.. turbo c.. create a program that will accept number of words to be consored. .a word must not exceed 10 characters long .the text to be entered will be no longer than 200 characters .there will be no 10 words example: enter number of words to be censor: 5 enter words to censor: windows office microsoft bill gates enter text to censor: bill gates founded microsoft and makes office and windows sample output: founded and makes and

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number 2 plssssss help !!....using array.. turbo c.. create a program that will accept a number and determine if it is a happy number or an unhappy number.. example: enter a number : 7 7*7=49 then 4 and 9 4*4 and 9*9== 16 + 18 gives you 97 then 9 and 7 9*9 and 7*7 == 81 + 49 gives you 130 then 1 and 3 1*1 and 3*3 == 1 + 9 gives you 10 1*1 gives you 1 sample output: 7= 49= 16+81= 97= 81+49=130 =1+9=10 =1 "7 is a happy number" . if the last number is 2 then the number being inputed is not a happy number.

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Convert the following expression to postfix and prefix X $ Y Z - M + N + P / Q / (R + S)

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Convert the following expression to postfix and prefix (A+B) * (D-C)


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plz answer..... a program that reads non-negative integer and computes and prints its factorial

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plz answer.. a program that takes a string e.g. "345" and returns integer 345

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plz answer....A program that takes 3 variables e.g a,b,c in as seperate parameters and rotates the values stored so that value goes a to b, b to c and c to a .

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plz answer.... write a program that reads line (using getline) e.g."345", converts each line to an integer using "atoi" and computes the average of all the numbers read. also compute the standard deviation.

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Un-Answered Questions { C }

what is the difference between north western polytechnique university and your applied colleges?? please give ur answers for this. :)


Using functions, write a program that multiplies two arrays. Use the following functions: - Function ReadArray - Function MultiplyArrays - Function DisplayArrays


I need testPalindrome and removeSpace #include #define SIZE 256 /* function prototype */ /* test if the chars in the range of [left, right] of array is a palindrome */ int testPalindrome( char array[], int left, int right ); /* remove the space in the src array and copy it over to the "copy" array */ /* set the number of chars in the "copy" array to the location that cnt points t */ void removeSpace(char src[], char copy[], int *cnt); int main( void ) { char c; /* temporarily holds keyboard input */ char string[ SIZE ]; /* original string */ char copy[ SIZE ]; /* copy of string without spaces */ int count = 0; /* length of string */ int copyCount; /* length of copy */ printf( "Enter a sentence:\n" ); /* get sentence to test from user */ while ( ( c = getchar() ) != '\n' && count < SIZE ) { string[ count++ ] = c; } /* end while */ string[ count ] = '\0'; /* terminate string */ /* make a copy of string without spaces */ removeSpace(string, copy, ©Count); /* print whether or not the sentence is a palindrome */ if ( testPalindrome( copy, 0, copyCount - 1 ) ) { printf( "\"%s\" is a palindrome\n", string ); } /* end if */ else { printf( "\"%s\" is not a palindrome\n", string ); } /* end else */ return 0; /* indicate successful termination */ } /* end main */ void removeSpace(char src[], char copy[], int *cnt) { } int testPalindrome( char array[], int left, int right ) { }


disply the following menu 1.Disply 2.Copy 3.Append; as per the menu do the file operations 4.Exit


7-Given an index k, return the kth row of the Pascal's triangle. For example, when k = 3, the row is [1,3,3,1]. For reference look at the following standard pascal’s triangle.


A banker has a seif with a cipher. Not to forget the cipher, he wants to write it coded as following: each digit to be replaced with the difference of 9 with the current digit. The banker chose a cipher. Decipher it knowing the cipher starts with a digit different than 9. I need to write a program that takes the cipher from the keyboard and prints the new cipher. I thought of the following: Take the input from the keyboard and put it into a string or an array. Go through the object with a for and for each digit other than the first, substract it from 9 and add it to another variable. Print the new variable. Theoretically I thought of it but I don't know much C. Could you give me any kind of hint, whether I am on the right track or not?


Topics: Structures, Arrays, Searching and Sorting Assume there is a small mobile computer device including a hard disk and a slot for a memory card. The device shall be used to backup photos e.g. during holiday. Every time a memory card is connected all photos of the card are copied into a new folder automatically. And your task is to develop some basic controlling software to show, add, remove, search and sort the directories of photos. Step by Step Implementation 1.Define two symbolic constants, one to hold the total volume of the disk (e.g. VOLUME) and another one to hold the number of entries the files system of the device can handle (MAXFOLD). 2.Define a new structure data type named DATE to store a date consisting of year, month and day as unsigned values. 3.Define an other structure data type FOLDER to store the information of one folder of photos: ◦A title as character array of appropriate length ◦The location (event) the photos are taken as character array of appropriate length ◦The date of the day the photos are copied to the disk using the just defined data type DATE ◦The number of photos as natural number ◦And the size of the folder in MB as floating point value 4.Define the following global variables and initialise them: ◦disk as an array with MAXFOLD elements of data type FOLDER ◦folders as natural value to count the number of folders currently stored at the disk (valid elements in the array) TEST: Now you should be able to compile the code the first time without any warning or error. In the menu only "p" to print and "q" to quit will work!. 5.Now complete the functions given by their prototype: float freeSpace ();The function has to calculate the sum of the size component of all elements currently stored in the disk array. The function shall return the free space of the disk by the difference between the available total volume and the calculated sum. TEST: To test this function you only need to uncomment printing the "statusline" at the function actionmenu(). Compare the calculated value with a manual calculation of the example values given above. unsigned isBefore (DATE, DATE);The function checks if one date is before the other. There are 3 different possibilities which have to be handled. Imagine for example these 3 different combinations of values: ◦2010-01-01 : 2010-01-02 ◦2010-01-01 : 2010-02-01 ◦2010-01-01 : 2009-01-01 The function shall just return the result of the comparison. unsigned isEqual (DATE, DATE);The function checks if one date is equal to the other, all components have to be compared. The function shall just return the result of the comparison. int findByDate (DATE);As the array is should be kept in order (sorted by date) implement a binary search for a folder by its date here. You need only to adapt the binary search we used in the exercise. Use the 2 comparing functions above where appropriate. The function shall return the index of the element which was found or -1. TEST: Now you can try searching a folder by date via the "s" in the menu. Activate the corresponding part in the main function. int isSpaceLeft (FOLDER);This function compares the free space of the disk with the size of folder given with the parameter list. The function shall return 1 if there is enough space to add the folder, otherwise 0 (just the result of the comparison). void SortByDate ();This function shall implement the InsertionSort using the component date as key. Use the provided algorithm/souce code of the exercise as template. If you need a comparison between dates, use the function isBefore you have written again. void addFolder (FOLDER);The function has to check if the disk has additional capacities to add the new folder (number of folders and space left). If at least one of these conditions is false print an error message and return -1. Else there has to be added an other test to avoid 2 folder elements with the same date (use the findByDate function here. If there is no folder with the new date simply attach the new folder at the end of the array and call the sorting algorithm afterwards to keep the order in the array. TEST: Now you can try to add a folder via the "a" in the menu. Activate the corresponding part in the main function. void delDir (int);This function removes one element of the disk array. The input parameter contains the index of the element to delete. Deletion can simply be done by moving all elements at the right one to the left (overwriting the element to delete. The function may get a -1. This has to be checked first (certainly there is nothing to delete then!) Don't forget to decrement the counter of elements at the end. TEST: Now you can try to remove a folder by date via the "r" in the menu. Activate the corresponding part in the main function. unsigned findAllOfLocation(char[], FOLDER[]);This is an optional additional task: The function shall find all elements with the given value for the component location (first input parameter). The array elements which are found have to be added to the FOLDER array (second input parameter). As this parameter is an array we can use the result later in the main function. There kernel of function implements a modified linear search on the disk array (it does not stop if one element is found bat continues search until the location of all elements is checked). The finally function shall return the number of elements found in the disk array. TEST: Now you can try to add a folder by date via the "l" in the menu. Activate the corresponding part in the main function.


The program will first compute the tax you owe based on your income. User is prompted to enter income. Program will compute the total amount of tax owed based on the following: Income Tax 0 - $45,000 = 0.15 x income $45,001 - $90,000 = 6750 + 0.20 x (income – 45000) $90,001 - $140,000 = 15750 + 0.26 x (income – 90000) $140,001 - $200,000 = 28750 + 0.29 x (income – 140000) Greater than $200,000 = 46150 + 0.33 x (income – 200000) Dollar amounts should be in dollars and cents (float point numbers with two decimals shown). Tax is displayed on the screen.


how to create duplicate link list using C???


Create a structure to specify data on students given below: Roll number, Name, Department, Course, Year of joining Assume that there are not more than 450 students in the college. 1.write a function to print names of all students who joined in a particular year 2.write a function to print the data of a student whose roll number is given


ATM machine and railway reservation class/object diagram


code for replace tabs with equivalent number of blanks


A c program to display count values from 0 to 100 and flash each digit for a secong.reset the counter after it reaches 100.use for loop,. pls guys hepl me.. :(


can anyone please tell about the nested interrupts?


If jack lies on Mon, Tue Wed and jill lies on Thursday, Friday and Saturday. If both together tell they lied yesterday. So c the given options and then c cos in the given dates one will be saying the truth and one will be lying. I got Thursday as option because jack is saying the truth he lied yest but jill is lying again as he lies on that day.