C Interview Questions
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Create a registration form application by taking the details like username, address, phone number, email with password and confirm password (should be same as password).Ensure that the password is of 8 characters with only numbers and alphabets. Take such details for 3 users and display the details. While taking input password must appear as “****”.

2801

Question 1: You want to conduct a survey within your classroom, on the quality of canteen’s food. You ask each of your class fellows to rank the quality of food between 1 and 5 (1 representing excellent quality and 5 representing worst quality). During the survey, you make a list containing the roll# of student and the opinion given by that student. The list can be as follow Roll # Opinion 234 1 235 1 236 5 237 1 238 2 239 3 240 5 241 5 242 1 To get the results of the survey, you need to determine the frequency of each opinion value. The frequency of an opinion is determined by counting the number of students giving that opinion. For example, for the above list the frequency of opinion value 1 is 4 and frequency of opinion value 4 is 0. After getting the frequency of each opinion, you can easily judge about the quality of the food by seeing through the frequency of each opinion. You need to develop a program to calculate the results of this survey. The program inputs the opinion of 50 students and counts the frequency of each opinion. It then displays a report showing the frequency of each opinion. Sample output: Opinion Frequency Remarks 1 5 Excellent 2 10 Good 3 15 Normal 4 10 Bad 5 10 Really bad

1 3963

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

IBM,

2862

how to build a exercise findig min number of e heap with list imlemented?

1748

. A database table called PERSON contains the fields NAME, BASIC and HRA. Write a computer program to print a report which employee name and total salary for those employees whose total salary is more than 10,000. Total Salary = BASIC + HRA. At the end, the program should also print the total number of employees whose total salary is more than 10,000.

1 5798

Write a c program to print the even numbers followed by odd numbers in an array without using additional array

Tech Mahindra,

1 3160

Just came across this question, felt worth sharing, so here it is I want you to make a C/C++ program that for any positive integer n will print all the positive integers from 1 up to it and then back again! Let's say n=5 I want the program to print: 1 2 3 4 5 4 3 2 1. Too easy you say? Okay then... You can ONLY USE: 1 for loop 1 printf/cout statement 2 integers( i and n) and as many operations you want. NO if statements, NO ternary operators, NO tables, NO pointers, NO functions!

1 3056

write a program in c to read array check element is present or not?

1 3640

How to write a program to receive an integer & find its octal equivalent by using for loop?

Google,

1 3872

main() { int x, arr[8]={11,22,33,44,55,66,77,88}; x=(arr+2)[3]; printf(“%d”,x); }

Vector,

8 20191

struct tag{ auto int x; static int y; };main() { struct tag s; s.x=4; s.y=5; printf(“%d”,s.x); }

Vector,

2 12661

main() { struct test { char c; int i; char m; } t1; printf("%d %d\n", sizeof(t1), sizeof(t1.c)); }

Vector, Vector India,

1 9065

main() { unsigned int k = 987 , i = 0; char trans[10]; do { trans[i++] =(char) (k%16 > 9 ? k%16 - 10 + 'a' : '\0' ); } while(k /= 16); printf("%s\n", trans); }

Vector,

4 12854

main() { FILE *fs; char c[10]; fs = fopen(“source.txt”, ”r”); /* source.txt exists and contains “Vector Institute” */ fseek(fs,0,SEEK_END); fseek(fs,-3L,SEEK_CUR); fgets(c,5,fs); puts(c); }

Vector,

1 9530

main() { char as[] = "\\0\0"; int i = 0; do{ switch( as[i++]) {case '\\' : printf("A"); break; case 0 : printf("B"); break; default : printf("C"); break; }} while(i<3); }

Vector, Vector India,

4 10151


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Un-Answered Questions { C }

2) Write a program that will help Air Traffic Control for an airport to view the sequence of flights ready for take-off. The airport can accommodate 10 flights waiting for take-off at any point in time. Each flight has a unique 3 digit numeric identifier.  Each time a flight takes-off, Air Traffic Control adds a flight to the waitlist. Each time a flight is added to the waitlist, the list of flights waiting to take-off must be displayed.  When a flight is cleared for take-off, Air Traffic Control removes the flight from the waitlist. Each time a flight takes-off, the list of flights waiting to take-off must be displayed.  Sequence of take-off is the sequence of addition to the waitlist

2635


What are the complete rules for header file searching?

788


Why doesn't C support function overloading?

1978


Why does notstrcat(string, "!");Work?

804


Distinguish between actual and formal arguments.

723






What is a const pointer?

725


What is wrong with this code?

798


Explain what is meant by high-order and low-order bytes?

751


using for loop sum 2 number of any 4 digit number in c language

1878


Declare the structure which contains the following members and write in C list of all students who score more than 75 marks. Roll No, Name, Father Name, Age, City, Marks.

852


What is the mean of function?

772


Draw a flowchart to produce a printed list of all the students over the age of 20 in a class .The input records contains the name and age of students. Assume a sentinel value of 99 for the age field of the trailer record

4902


Describe the steps to insert data into a singly linked list.

748


What is the explanation for modular programming?

823


How many bytes are occupied by near, far and huge pointers (dos)?

826