Assume int[] t = {0, 1, 2, 3, 4, 5}; What is t[6]? undefined, there is an error in this code 4 6 5
Assume int[] t = {0, 1, 2, 3, 4, 5}; What is t[6]?
Introduction :
An array is a collection of elements of the same data type that are stored in a contiguous block of memory.
In the example above, t is an array of integers that contains the values 0, 1, 2, 3, 4, and 5. We can access any of the elements of the array by using the index of that element.
For example, to access the first element, we can use t[0], to access the second element, we can use t[1], and so on.
Array indexing:
An array index is a numeric value that references a specific element within an array. In the example given, t[6] is attempting to access an element that is beyond the length of the array, therefore it would return an undefined value.
Array indexing is the process of accessing individual elements of an array. Each element in an array is associated with a numerical index that can be used to access that element. For example, consider an array of numbers:
int arr[5] = {1,2,3,4,5};
Here, the array arr has 5 elements, each associated with an index number starting at 0. To access the second element of the array, we would use the index of 1. Therefore, arr[1] would return the value 2. We can also use negative indices to reference elements from the end of the array. For example, arr[-1] would return the value 5.
In addition to accessing single elements, we can also use indexing to access multiple elements of an array. This can be done by providing a range of indices. For example, arr[2:4] would return the elements 3, 4, and 5. We can also use strides to access elements at a certain interval. For example, arr[0:4:2] would return the elements 1, 3, and 5. Similarly, we can use negative strides to access elements from the end of an array. For example, arr[-2::-1] would return the elements 4, 3, 2, 1.
Overall, array indexing is a powerful tool for accessing elements of an array. It can be used to access single elements, multiple elements, and elements with certain intervals.
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