Answer Posted / puneet

stdio.h> is a header file which available in include
directory of the system. When we write #include<stdio.h>
preprocessor search for it in include directory directly
and not out of this directory. But when we write "stdio.h"
precessor start searching for this header file from current
directory and then in parent directories. So if we write
our own stdio.h in the current directory and include in
program as #include"stdio.h" then our header will be
included instead of system header.

Write a c program to demonstrate character and string constants?

1674

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Why doesnt long int work?

602

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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.

1505

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What is signed and unsigned?

629

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What is a floating point in c?

591

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What is the difference between typedef struct and struct?

589

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Why is c so important?

587

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What is exit() function?

556

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What is the correct code to have following output in c using nested for loop?

603

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What is break in c?

576

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Create a structure to specify data on students as given below: Roll number, Name, Department, Course, and Year of joining. Assume that there are not more than 450 students in the collage. (a) Write a function to print the names of all students who joined in the last 3 years. (b) Write a function to print the data of a student whose roll numbers are divisible by 4.

590

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What is const keyword in c?

734

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What does 3 mean in texting?

602

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What is the return type of sizeof?

582

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What is the meaning of typedef struct in c?

579

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