Answer Posted / rohit sah

A data structure is a way of organizing data that considers not only the items stored, but also their relationship to each other. Advance knowledge about the relationship between data items allows designing of efficient algorithms for the manipulation of data.

What is the purpose of 'register' keyword in c language?

1072

---

What is the significance of scope resolution operator?

1455

---

Process by which one bit pattern in to another by bit wise operation is?

1225

---

What are the ways to a null pointer can use in c programming language?

1193

---

What could possibly be the problem if a valid function name such as tolower() is being reported by the C compiler as undefined?

1328

---

write an algorithm to display a square matrix.

2758

---

What is "Duff's Device"?

1221

---

Explain what does the characters 'r' and 'w' mean when writing programs that will make use of files?

1310

---

Explain output of printf("Hello World"-'A'+'B'); ?

1557

---

What type is sizeof?

1084

---

can we change the default calling convention in c if yes than how.........?

2592

---

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.

2044

---

write a program to concatenation the string using switch case?

2146

---

Explain what does a function declared as pascal do differently?

1343

---

A variable that is defined in a specified portion of a program but can be used throughout the program a) global variable b) local variable c) character d) none

1305

---