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 “****”.

2749

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 3879

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

IBM,

2810

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

1709

. 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 5733

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

Tech Mahindra,

1 3089

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 2973

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

1 3565

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

Google,

1 3774

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

Vector,

8 19879

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

Vector,

2 12530

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

Vector, Vector India,

1 8970

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 12670

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 9424

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 9951


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Un-Answered Questions { C }

What is string function in c?

612


Is c is a procedural language?

695


What are structures and unions? State differencves between them.

701


What do you understand by friend-functions? How are they used?

742


How do you define CONSTANT in C?

738






I was asked to write a program in c which when executed displays how many no.of clients are connected to the server.

1982


Give differences between - new and malloc() , delete and free() ?

694


formula to convert 2500mmh2o into m3/hr

606


What are types of preprocessor in c?

704


what is the format specifier for printing a pointer value?

672


What is the purpose of void in c?

692


What is the use of typedef in c?

669


What does s c mean in text?

697


How can you increase the allowable number of simultaneously open files?

674


while initialization of array why we use a[][2] why not a[2][]...?

1945