Array Declaration and Access

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What is the purpose of declaring an array before using it in a program?

To ensure the elements are of the same data type

To reserve memory locations for the array elements (correct)

To allocate memory locations for the array in a non-consecutive manner

To specify the range of the array elements

In C/C++ programming, what is the correct syntax for declaring an array with 'n' elements?

data_type n array_name[];

n array_type array_name[];

array_name[data_type n];

array_type array_name[n]; (correct)

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

1 to n

0 to n

0 to (n-1) (correct)

1 to (n-1)

How can array elements be initialized at compile time?

Using type array_name[size]={ list of values}; Signup and view all the answers

What is required during declaration of an array?

Specifying the size of the array Signup and view all the answers

'An array must be declared before it is used' - Why is this statement true?

'To allocate and reserve memory locations' Signup and view all the answers

'Arrays can be initialized at the time of declaration when their initial values are known in advance' - What does this statement imply?

'Array elements can be set with values during declaration' Signup and view all the answers

'0 to (n-1) is the range of array' - What does this range indicate?

'The first and last indexes of the array' Signup and view all the answers

'Arrays are stored in consecutive memory locations in RAM' - Why is this arrangement beneficial?

'To enable faster access and retrieval of elements' Signup and view all the answers

'Declaration of an array is similar to declaring ordinary variables' - Why is this comparison made?

'To stress that declaring an array involves specifying its size' Signup and view all the answers

What happens when the number of values to be initialized in an array is greater than the size of the array in C?

The compiler throws an error due to excess values. Signup and view all the answers

When initializing an array with fewer values than its size, what does the compiler do in C?

It initializes the extra memory locations to zero. Signup and view all the answers

In C, what happens when an array is initialized with all zeros?

The compiler initializes all memory locations of the array to zero. Signup and view all the answers

What is the result of initializing an array without specifying its size in C?

The compiler sets the array size to the number of initial values specified. Signup and view all the answers

What is the significance of a null character when initializing an array with a string in C?

It indicates the end of the array and allocates one additional byte. Signup and view all the answers

What happens when an attempt is made to initialize a char variable with a string directly in C?

The initialization results in a syntax error due to incompatible types. Signup and view all the answers

How can large arrays be initialized at runtime in C?

<code>scanf</code> can be utilized to input values for each element at runtime. Signup and view all the answers

What happens when 'scanf' is used to initialize an array at runtime in C?

<code>scanf</code> reads user input and assigns it to specific elements of the array. Signup and view all the answers

In partial array initialization in C, what value are uninitialized memory locations set to?

'0' Signup and view all the answers

How does C handle partial array initialization when the number of values is less than the array size?

It discards any extra values beyond those provided for initialization. Signup and view all the answers

What is the outcome of attempting partial initialization of an array in C with excess values compared to its size?

The partial initialization fails and results in unpredictable behavior. Signup and view all the answers