Answer Posted / glibwaresoftsolutions

 malloc(): Allocates a single block of memory without initializing it.
 calloc(): Allocates multiple blocks of memory and initializes them to zero.

What is a macro, and explain how do you use it?

1015

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Should I use symbolic names like true and false for boolean constants, or plain 1 and 0?

1018

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Explain how do you print only part of a string?

1159

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Is main is user defined function?

1071

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How do you sort filenames in a directory?

1123

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What are the parts of c program?

1040

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we called a function and passed something do it we have always passed the "values" of variables to the called function. such functions calles are called a) calls by reference b) calls by value c) calls by zero d) none of the above

1103

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What is file in c preprocessor?

1088

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Why we not create function inside function.

2142

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What does the file stdio.h contain?

998

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What are identifiers c?

1019

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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.

1930

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Explain pointers in c programming?

1063

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Give me the code of in-order recursive and non-recursive.

1319

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Explain how can type-insensitive macros be created?

954

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