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C Interview Questions
Questions Answers Views Company eMail

write a program in c to find out the sum of digits of a number.but here is a condition that compiler sums the value from left to right....not right to left..

1 3078

Write a program to maintain student’s record. Record should not be available to any unauthorized user. There are three (3) categories of users. Each user has its own type. It depends upon user’s type that which kind of operations user can perform. Their types and options are mentioned below: 1. Admin (Search Record [by Reg. No or Name], View All Records, Insert New Record, Modify Existing Record) 2. Super Admin (Search Record [by Reg. No or Name], View All Records, Insert New Record, Modify Existing Record, Delete Single Record) 3. Guest (Search Record [by Reg. No or Name], View All Records) When first time program runs, it asks to create accounts. Each user type has only 1 account (which means that there can be maximum 3 accounts). In account creation, following options are required: Login Name: <6-10 alphabets long, should be unique> Password: <6-10 alphabets long, should not display characters when user type> Confirm Password: Account Type: Login Name, Password and Account Type should be stored in a separate file in encrypted form. (Encryption means that actual information should be changed and Decryption means that Encrypted information is changed back to the actual information) If any of the above mentioned requirement(s) does not meet then point out mistake and ask user to specify information again. When Program is launched with already created accounts, it will ask for user name and password to authenticate. On successful authentication, give options according to the user’s type.

1944

main() { int i = 10; printf(" %d %d %d \n", ++i, i++, ++i); }

TCS, Vector,

10 41121

c language interview questions & answer

1916

What is the difference between realloc() and free()

1 3454

int a=20; int b=30; int c=40; printf("%d%d%d"); what will be the output?

CMC,

5 7999

input any 4 digit number and find the difference of all the digits?

Google,

3 4644

Write an algorithm for implementing insertion and deletion operations in a singly linked list using arrays ?

MNC,

3470

What is the purpose of the following code? Is there any problem with the code? void send(int count, short *to, short *from) { /* count > 0 assumed */ register n = (count + 7) / 8; switch (count % 8) { case 0: do { *to = *from++; case 7: *to = *from++; case 6: *to = *from++; case 5: *to = *from++; case 4: *to = *from++; case 3: *to = *from++; case 2: *to = *from++; case 1: *to = *from++; } while (--n > 0); } }

Google,

2450

what is the purpose of the following code, and is there any problem with the code? void fn(long* p1, long* p2) { register int x = *p1; register int y = *p2; x ^= y; y ^= x; x ^= y; *p1 = x; *p2 = y; }

Google,

1 4236

what is the purpose of the code, and is there any problem with the code? int f( int n, int l, int r ) { return (n << l) >> r; }

Google,

2 4231

What is the purpose of the code, and is there any problem with it? unsigned int f( unsigned n ) { return –n & 7; }

Google,

1 3663

what is the purpose of the code, and is there any problem with it. bool f( uint n ) { return (n & (n-1)) == 0; }

Google,

1 3634

what is the purpose of the code, and is there any problem with it. unsigned int v[10]; unsigned int i = 0; while (i < 10) v[i] = i++;

Google,

2 4155

Identify the operators that is not used with pointer a. && b. # c. * d. >>

2 9380


Post New C Questions

Un-Answered Questions { C }

Is stack a keyword in c?

1046


Lists the benefits of c programming language?

1079


The statement, int(*x[]) () what does in indicate?

1099


Does c have an equivalent to pascals with statement?

967


How will you print TATA alone from TATA POWER using string copy and concate commands in C?

1335


In this problem you are to write a program that will cut some number of prime numbers from the list of prime numbers between 1 and N.Your program will read in a number N; determine the list of prime numbers between 1 and N; and print the C*2 prime numbers from the center of the list if there are an even number of prime numbers or (C*2)-1 prime numbers from the center of the list if there are an odd number of prime numbers in the list.

1810


How can you find out how much memory is available?

1027


What is the use of void pointer and null pointer in c language?

1086


write a c program to find the sum of five entered numbers using an array named number

2090


Why is it usually a bad idea to use gets()? Suggest a workaround.

1717


What is scope rule in c?

1023


What is the difference between NULL and NUL?

1255


Write a program that takes a 5 digit number and calculates 2 power that number and prints it(should not use big integers and exponential functions)

6758


Explain about block scope in c?

1046


Is there a built-in function in C that can be used for sorting data?

1197