Array Declaration and Usage
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Questions and Answers

What is an array?

  • A collection of random data items
  • An unordered set of similar data items
  • A collection of different data types
  • An ordered set of similar data items (correct)

    • Where are the data items of an array stored in memory?

  • Separate memory locations
  • Adjacent memory locations
  • Consecutive memory locations (correct)
  • Random memory locations

    • How should an array be declared before use?

  • Array elements are accessed using different names
  • Data types can vary within an array
  • Size is specified during declaration (correct)
  • Size is not required during declaration

    • What is the range of an array with n elements?

    <p>0 to (n-1)</p> Signup and view all the answers

    How can arrays be initialized at compile time?

    <p>Initializing all specified memory locations</p> Signup and view all the answers

    What is the syntax for declaring an array?

    <p><code>data_type array_name[n];</code></p> Signup and view all the answers

    What type of values can array elements be initialized with?

    <p><code>Data items of type int, char, etc.</code></p> Signup and view all the answers

    int arr[5]; What does this code initialize?

    <p><code>An integer array arr with 5 elements</code></p> Signup and view all the answers

    {1, 2, 3, 4} How are these values represented in an array initialization?

    <p><code>int arr[] = {1, 2, 3, 4};</code></p> Signup and view all the answers

    float numbers[10]; What does this code declare?

    <p><code>An array named numbers with 10 elements of type float</code></p> Signup and view all the answers

    What happens if the number of values to be initialized is more than the size of the array in C language?

    <p>An error is generated during compilation</p> Signup and view all the answers

    When an array is partially initialized in C, what happens to the remaining elements?

    <p>They are initialized to zero automatically</p> Signup and view all the answers

    What does the C compiler do if an array is initialized with all zeros?

    <p>Automatically initializes all elements to zero</p> Signup and view all the answers

    What is the size of array 'b' in the declaration 'char b[]={'C','O','M','P','U','T','E','R'};'?

    <p>8 bytes</p> Signup and view all the answers

    In string initialization of an array in C, what character ends the string?

    <p>Null character</p> Signup and view all the answers

    What will happen if you initialize an array in C without specifying the size directly?

    <p>Compiler sets the size based on number of initial values provided</p> Signup and view all the answers

    How does run time initialization of an array differ from compile time initialization in C?

    <p>Run time initialization requires manual input, while compile time does not</p> Signup and view all the answers

    If you declare 'int ch[]={1,0,3,5};', what will be the size of the array 'ch'?

    <p>4</p> Signup and view all the answers

    'char b="COMPUTER";' - Is this a correct way to initialize a character array in C?

    <p>'char b=&quot;COMPUTER&quot;;' results in a compilation error</p> Signup and view all the answers

    'int a={9,2,4,5,6};' - What error will be encountered with this initialization?

    <p>'Too few initial values for array size'</p> Signup and view all the answers

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