Answer Posted / sachin tyagi

The pre processor run before the compliler
The started statement # is called pre-procrssor command

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.

1508

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What is the -> in c?

577

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What is return type in c?

635

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Write a C program to count the number of email on text

1412

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What should malloc(0) do? Return a null pointer or a pointer to 0 bytes?

583

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In this assignment you are asked to write a multithreaded program to find the duplicates in an array of 10 million integers. The integers are between -5000,000 to 5000,000 and are generated randomly. Use 10 threads, each thread works on 1000,000 integers. Compare the time needed to accomplish the task with single thread of execution program. Do not include the time to fill the array with integers in the execution time.

2677

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Device an algorithm for weiler-atherton polygon clipping, where the clipping window can be any specified polygon

5460

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What are structure members?

590

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number of times a digit is present in a number

1537

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What is the size of a union variable?

596

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What is the use of sizeof?

546

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How do you redirect a standard stream?

618

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Apart from dennis ritchie who the other person who contributed in design of c language.

801

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What do you mean by a local block?

625

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What is a file descriptor in c?

555

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